VGIT PROGRAM VERSION 0.6.11
By Patricio Gallardo and Jesus Martinez-Garcia
VGIT of Hypersurfaces
Solving the problem


This is a problem of VGIT, we parametrize pairs of hypersurfaces in projective space and divisors given by restriction of hypersurfaces in that projective space
Dimension:  2
Degree:  4
The are 24 walls, including the first and last
There are 23 chambers
The walls are:
[0, 4/23, 4/17, 4/15, 2/7, 1/3, 4/11, 4/9, 1/2, 4/7, 8/13, 2/3, 12/17, 3/4, 4/5, 8/9, 10/11, 12/13, 28/29, 1, 20/19, 12/11, 8/7, 4/3]
The chambers are:
[2/29, 45/253, 33/136, 29/105, 27/91, 47/138, 21/55, 70/153, 47/92, 41/70, 154/247, 59/87, 134/187, 31/40, 118/145, 89/99, 131/143, 206/221, 57/58, 47/46, 302/285, 350/319, 138/119]
Both walls and chambers:
[0, 2/29, 4/23, 45/253, 4/17, 33/136, 4/15, 29/105, 2/7, 27/91, 1/3, 47/138, 4/11, 21/55, 4/9, 70/153, 1/2, 47/92, 4/7, 41/70, 8/13, 154/247, 2/3, 59/87, 12/17, 134/187, 3/4, 31/40, 4/5, 118/145, 8/9, 89/99, 10/11, 131/143, 12/13, 206/221, 28/29, 57/58, 1, 47/46, 20/19, 302/285, 12/11, 350/319, 8/7, 138/119, 4/3]



Solution for t= 0  which is a wall.
There are 5 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 5 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(1, 1, -1, -1)
(3, -1, -1, -1)
(1, 1, 1, -3)
(3, 1, -1, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 2 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 1, -1, -1) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 1, 0, 2) , (0, 2, 2, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , (0, 0, 1, 0) , 


----------------------------------------------

========================================================

( 3 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, -1, -1, -1) )
Monomials variety (potential closed orbit): (1, 1, 1, 1) , (1, 0, 1, 2) , (1, 2, 1, 0) , (1, 0, 0, 3) , (1, 1, 2, 0) , (1, 2, 0, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 1, 1, -3) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 0, 2, 1) , (0, 2, 1, 1) , (1, 2, 0, 1) , (2, 1, 0, 1) , (0, 3, 0, 1) , (0, 0, 3, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 5 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 1, -1, -3) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (0, 3, 0, 1) , (1, 0, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

Solution for t= 2/29  which is a chamber.
There are 8 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 8 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(1, 1, -1, -1)
(3, 1, -1, -3)
(1, 1, 1, -3)
(3, -1, -1, -1)
(13, 9, 1, -23)
(19, 3, -5, -17)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 9, 1, -23) 


N^+( (13, 9, 1, -23) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (19, 3, -5, -17) 


N^+( (19, 3, -5, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/23  which is a wall.
There are 9 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(1, 1, -1, -1)
(3, 1, -1, -3)
(1, 1, 1, -3)
(3, -1, -1, -1)
(13, 9, 1, -23)
(23, -1, -9, -13)
(19, 3, -5, -17)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 9, 1, -23) 


N^+( (13, 9, 1, -23) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 9, 1, -23) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 0, 1) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (23, -1, -9, -13) 


N^+( (23, -1, -9, -13) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 0, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (23, -1, -9, -13) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 9 )  OPS= (19, 3, -5, -17) 


N^+( (19, 3, -5, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 45/253  which is a chamber.
There are 11 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 11 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(1, 1, -1, -1)
(9, 5, 1, -15)
(3, 1, -1, -3)
(5, 5, 1, -11)
(3, -1, -1, -1)
(23, -1, -9, -13)
(1, 1, 1, -3)
(11, 7, -1, -17)
(19, 3, -5, -17)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (9, 5, 1, -15) 


N^+( (9, 5, 1, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (23, -1, -9, -13) 


N^+( (23, -1, -9, -13) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 0, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (11, 7, -1, -17) 


N^+( (11, 7, -1, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (19, 3, -5, -17) 


N^+( (19, 3, -5, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/17  which is a wall.
There are 12 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 12 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(1, 1, -1, -1)
(9, 5, 1, -15)
(3, 1, -1, -3)
(5, 5, 1, -11)
(3, -1, -1, -1)
(1, 1, 1, -3)
(17, 1, -7, -11)
(11, 7, -1, -17)
(19, 3, -5, -17)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (17, 5, -3, -19) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (0, 1, 3, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, 1, -15) 


N^+( (9, 5, 1, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (17, 1, -7, -11) 


N^+( (17, 1, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (17, 1, -7, -11) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 11 )  OPS= (11, 7, -1, -17) 


N^+( (11, 7, -1, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 7, -1, -17) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (0, 3, 0, 1) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 12 )  OPS= (19, 3, -5, -17) 


N^+( (19, 3, -5, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (19, 3, -5, -17) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

Solution for t= 33/136  which is a chamber.
There are 12 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 12 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(1, 1, -1, -1)
(9, 5, 1, -15)
(13, 1, -3, -11)
(3, 1, -1, -3)
(5, 5, 1, -11)
(3, -1, -1, -1)
(1, 1, 1, -3)
(5, 3, -1, -7)
(17, 1, -7, -11)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, 1, -15) 


N^+( (9, 5, 1, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (17, 1, -7, -11) 


N^+( (17, 1, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/15  which is a wall.
There are 13 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 13 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(1, 1, -1, -1)
(9, 5, 1, -15)
(13, 1, -3, -11)
(3, 1, -1, -3)
(5, 5, 1, -11)
(3, -1, -1, -1)
(1, 1, 1, -3)
(5, 3, -1, -7)
(17, 1, -7, -11)
(15, -1, -5, -9)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, 1, -15) 


N^+( (9, 5, 1, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 5, 1, -15) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (17, 1, -7, -11) 


N^+( (17, 1, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (15, -1, -5, -9) 


N^+( (15, -1, -5, -9) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 0, 2, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (15, -1, -5, -9) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 2, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

Solution for t= 29/105  which is a chamber.
There are 14 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(5, 1, 1, -7)
(1, 1, 1, -3)
(13, 1, -3, -11)
(3, 1, -1, -3)
(1, 1, -1, -1)
(3, -1, -1, -1)
(2, 1, 0, -3)
(5, 5, 1, -11)
(5, 3, -1, -7)
(17, 1, -7, -11)
(15, -1, -5, -9)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (17, 1, -7, -11) 


N^+( (17, 1, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (15, -1, -5, -9) 


N^+( (15, -1, -5, -9) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 0, 2, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 2/7  which is a wall.
There are 14 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(1, 1, -1, -1)
(1, 1, 1, -3)
(13, 1, -3, -11)
(3, 1, -1, -3)
(7, 1, -3, -5)
(5, 1, 1, -7)
(3, -1, -1, -1)
(2, 1, 0, -3)
(5, 5, 1, -11)
(5, 3, -1, -7)
(15, -1, -5, -9)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 1, -3, -5) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 1, 0, 2) , (1, 0, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 9 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 3, -1, -7) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 0, 3, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 14 )  OPS= (15, -1, -5, -9) 


N^+( (15, -1, -5, -9) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 0, 2, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 27/91  which is a chamber.
There are 14 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(17, 5, -3, -19)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -3, -11)
(13, 1, -3, -11)
(3, 1, -1, -3)
(7, 1, -3, -5)
(5, 1, 1, -7)
(3, -1, -1, -1)
(2, 1, 0, -3)
(5, 5, 1, -11)
(15, -1, -5, -9)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (15, -1, -5, -9) 


N^+( (15, -1, -5, -9) )
Monomials variety (general element): (1, 1, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 0, 2, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 1/3  which is a wall.
There are 14 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(3, 0, -1, -2)
(17, 5, -3, -19)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -3, -11)
(13, 1, -3, -11)
(3, -1, -1, -1)
(7, 1, -3, -5)
(3, 1, -1, -3)
(5, 1, 1, -7)
(13, 5, -7, -11)
(2, 1, 0, -3)
(5, 5, 1, -11)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (1, 0, 2, 1) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 0, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 1, 0, 2) , (1, 0, 2, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (2, 2, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, 0, -3) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 14 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 47/138  which is a chamber.
There are 14 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(3, 0, -1, -2)
(17, 5, -3, -19)
(1, 1, -1, -1)
(13, 1, -3, -11)
(1, 1, 1, -3)
(9, 5, -3, -11)
(7, 3, -1, -9)
(3, -1, -1, -1)
(7, 1, -3, -5)
(3, 1, -1, -3)
(5, 1, 1, -7)
(13, 5, -7, -11)
(5, 5, 1, -11)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (1, 0, 2, 1) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (17, 5, -3, -19) 


N^+( (17, 5, -3, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/11  which is a wall.
There are 15 non-stable maximal sets of monomials of which, 9 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(3, 0, -1, -2)
(11, -1, -5, -5)
(1, 1, -1, -1)
(13, 1, -3, -11)
(1, 1, 1, -3)
(9, 5, -3, -11)
(7, 3, -1, -9)
(3, 1, -1, -3)
(11, 3, -1, -13)
(11, 3, -5, -9)
(5, 1, 1, -7)
(13, 5, -7, -11)
(5, 5, 1, -11)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (1, 0, 2, 1) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, -1, -5, -5) 


N^+( (11, -1, -5, -5) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 2, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 0, 1, 2) , (0, 4, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (2, 1, 1, 0) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, -1, -5, -5) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 0, 0, 3) , (1, 0, 2, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 1, -3, -11) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (1, 2, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 5, -3, -11) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (0, 3, 0, 1) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -1, -13) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 0, 1) , (2, 0, 0, 2) , (1, 0, 2, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 11 )  OPS= (11, 3, -5, -9) 


N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -5, -9) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 5, -7, -11) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 1, 2, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 14 )  OPS= (5, 5, 1, -11) 


N^+( (5, 5, 1, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (1, 1, 2, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 5, 1, -11) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 15 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 7, -5, -13) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (1, 0, 3, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

Solution for t= 21/55  which is a chamber.
There are 17 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(3, 0, -1, -2)
(11, -1, -5, -5)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -7, -7)
(7, 3, -1, -9)
(3, 1, -1, -3)
(11, 3, -1, -13)
(11, 3, -5, -9)
(5, 1, 1, -7)
(13, 5, -7, -11)
(2, 1, -1, -2)
(1, 1, 0, -2)
(29, -3, -7, -19)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (1, 0, 2, 1) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, -1, -5, -5) 


N^+( (11, -1, -5, -5) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 2, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 0, 1, 2) , (0, 4, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (2, 1, 1, 0) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (11, 3, -5, -9) 


N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (1, 1, 0, -2) 


N^+( (1, 1, 0, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (29, -3, -7, -19) 


N^+( (29, -3, -7, -19) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/9  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(9, 5, -3, -11)
(11, -1, -5, -5)
(5, 0, -1, -4)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -7, -7)
(7, 3, -1, -9)
(3, 1, -1, -3)
(11, 3, -1, -13)
(9, 1, -3, -7)
(11, 3, -5, -9)
(5, 1, 1, -7)
(2, 1, -1, -2)
(1, 1, 0, -2)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 5, -3, -11) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (0, 2, 1, 1) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (11, -1, -5, -5) 


N^+( (11, -1, -5, -5) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 2, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 0, 1, 2) , (0, 4, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (2, 1, 1, 0) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 3, -1, -9) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (1, 2, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 10 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 1, -3, -7) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 13 )  OPS= (11, 3, -5, -9) 


N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -5, -9) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 14 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (1, 1, 0, -2) 


N^+( (1, 1, 0, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 70/153  which is a chamber.
There are 15 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(13, 5, -7, -11)
(9, 5, -3, -11)
(11, -1, -5, -5)
(5, 0, -1, -4)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -7, -7)
(3, 1, -1, -3)
(9, 1, -3, -7)
(11, 3, -1, -13)
(5, 1, 1, -7)
(2, 1, -1, -2)
(1, 1, 0, -2)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (11, -1, -5, -5) 


N^+( (11, -1, -5, -5) )
Monomials variety (general element): (1, 1, 2, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 2, 1, 0) , (1, 0, 0, 3) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 0, 1, 2) , (0, 4, 0, 0) , (2, 0, 2, 0) , (1, 0, 2, 1) , (2, 1, 1, 0) , (1, 3, 0, 0) , (3, 1, 0, 0) , (1, 1, 0, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (1, 1, 0, -2) 


N^+( (1, 1, 0, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 1/2  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(9, 5, -3, -11)
(5, 0, -1, -4)
(1, 1, -1, -1)
(1, 1, 1, -3)
(9, 5, -7, -7)
(3, 1, -1, -3)
(9, 1, -3, -7)
(11, 3, -1, -13)
(5, 1, 1, -7)
(13, 5, -7, -11)
(2, 1, -1, -2)
(1, 1, 0, -2)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 0, -1, -1) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (1, 0, 1, 2) , (1, 0, 3, 0) , (1, 0, 0, 3) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 3 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 1, 2, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 1, 2, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 14 )  OPS= (1, 1, 0, -2) 


N^+( (1, 1, 0, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 1, 2, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (1, 2, 1, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 1, 0, -2) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (1, 2, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

Solution for t= 47/92  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(9, 5, -3, -11)
(5, 5, -3, -7)
(9, 5, -7, -7)
(3, 1, -1, -3)
(9, 1, -3, -7)
(11, 3, -1, -13)
(1, 1, -1, -1)
(13, 5, -7, -11)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, -1, -1, -3)
(5, 1, 1, -7)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 2, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/7  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 7 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(7, -1, -1, -5)
(5, 5, -3, -7)
(11, 7, -5, -13)
(9, 5, -7, -7)
(7, 3, -1, -9)
(3, 1, -1, -3)
(7, 1, -3, -5)
(9, 1, -3, -7)
(1, 1, -1, -1)
(13, 5, -7, -11)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, -1, -1, -3)
(5, 1, 1, -7)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, -1, -1, -5) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 1, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (1, 0, 1, 2) , (0, 4, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 7, -5, -13) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (1, 0, 3, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 6 )  OPS= (9, 5, -7, -7) 


N^+( (9, 5, -7, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 3, -1, -9) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 2, 1, 1) , (2, 0, 0, 2) , (1, 0, 2, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 1, -3, -7) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (1, 1, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 11 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 5, -7, -11) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 1, 2, 0) , (2, 0, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , 


----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 2, 0, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, 1, -7) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 1, 0) , (2, 0, 1, 1) , (0, 4, 0, 0) , (0, 2, 2, 0) , (2, 1, 0, 1) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

Solution for t= 41/70  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -1, -9)
(7, 3, -5, -5)
(3, 1, -1, -3)
(7, 1, -3, -5)
(3, 1, 1, -5)
(11, 3, -1, -13)
(3, 3, -1, -5)
(13, 5, 1, -19)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, -1, -1, -3)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, 1, -19) 


N^+( (13, 5, 1, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 8/13  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -1, -9)
(7, 3, -5, -5)
(3, 1, -1, -3)
(11, 3, -1, -13)
(3, 1, 1, -5)
(13, 1, -3, -11)
(3, 3, -1, -5)
(13, 5, -7, -11)
(1, 1, 1, -3)
(5, -1, -1, -3)
(13, 5, 1, -19)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -1, -13) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 1, -3, -11) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 11 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (13, 5, 1, -19) 


N^+( (13, 5, 1, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 154/247  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 16 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(11, 7, -5, -13)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -1, -9)
(7, 3, -5, -5)
(3, 1, -1, -3)
(3, 1, 1, -5)
(13, 1, -3, -11)
(3, 3, -1, -5)
(13, 5, -7, -11)
(1, 1, 1, -3)
(5, -1, -1, -3)
(13, 5, 1, -19)
(15, 3, -1, -17)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (13, 5, -7, -11) 


N^+( (13, 5, -7, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (13, 5, 1, -19) 


N^+( (13, 5, 1, -19) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 16 )  OPS= (15, 3, -1, -17) 


N^+( (15, 3, -1, -17) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 2/3  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -1, -9)
(7, 3, -5, -5)
(3, 1, -1, -3)
(3, 1, 1, -5)
(3, 3, -1, -5)
(2, 1, 0, -3)
(1, 1, 1, -3)
(5, -1, -1, -3)
(15, 3, -1, -17)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 0, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 0, 1, 2) , (0, 2, 2, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 1, -1, -3) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (1, 1, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (3, 1, -1, -3) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 1, -1, -3) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 1, 1) , (1, 1, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (3, 1, -1, -3) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, 0, -3) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 12 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (15, 3, -1, -17) 


N^+( (15, 3, -1, -17) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 59/87  which is a chamber.
There are 15 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -5, -5)
(7, 3, -1, -9)
(3, 1, 0, -4)
(3, 1, -1, -3)
(3, 3, -1, -5)
(1, 1, 1, -3)
(3, 1, 1, -5)
(15, 3, -1, -17)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, 0, -4) 


N^+( (3, 1, 0, -4) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (15, 3, -1, -17) 


N^+( (15, 3, -1, -17) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 12/17  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -5, -5)
(7, 3, -1, -9)
(3, 1, 0, -4)
(3, 1, -1, -3)
(3, 3, -1, -5)
(1, 1, 1, -3)
(3, 1, 1, -5)
(17, 1, -3, -15)
(15, 3, -1, -17)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (3, 1, 0, -4) 


N^+( (3, 1, 0, -4) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (17, 1, -3, -15) 


N^+( (17, 1, -3, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (17, 1, -3, -15) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 14 )  OPS= (15, 3, -1, -17) 


N^+( (15, 3, -1, -17) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (15, 3, -1, -17) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 15 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 134/187  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(7, -1, -1, -5)
(5, 1, -1, -5)
(7, 3, -5, -5)
(1, 1, 1, -3)
(7, 3, -1, -9)
(3, 1, 0, -4)
(3, 1, -1, -3)
(1, 1, -1, -1)
(3, 3, -1, -5)
(3, 1, 1, -5)
(17, 1, -3, -15)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 0, -4) 


N^+( (3, 1, 0, -4) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (17, 1, -3, -15) 


N^+( (17, 1, -3, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 3/4  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(4, 0, -1, -3)
(7, -1, -1, -5)
(5, 1, -1, -5)
(7, 3, -5, -5)
(1, 1, 1, -3)
(7, 3, -1, -9)
(3, 1, 0, -4)
(3, 1, -1, -3)
(1, 1, -1, -1)
(3, 3, -1, -5)
(3, 1, 1, -5)
(17, 1, -3, -15)
(11, 7, -5, -13)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (4, 0, -1, -3) 


N^+( (4, 0, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (1, 0, 2, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (4, 0, -1, -3) )
Monomials variety (potential closed orbit): (0, 3, 0, 1) , (1, 0, 1, 2) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, 0, -4) 


N^+( (3, 1, 0, -4) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 1, 0, -4) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 10 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (17, 1, -3, -15) 


N^+( (17, 1, -3, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 31/40  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 15 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(4, 0, -1, -3)
(7, -1, -1, -5)
(1, 1, -1, -1)
(7, 3, -5, -5)
(1, 1, 1, -3)
(7, 3, -1, -9)
(3, 1, -1, -3)
(3, 1, 1, -5)
(5, 1, -1, -5)
(3, 3, -1, -5)
(17, 1, -3, -15)
(11, 7, -5, -13)
(4, 1, 0, -5)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 2, 0, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (4, 0, -1, -3) 


N^+( (4, 0, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (1, 0, 2, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 2, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 1, 0, 2) , (0, 2, 2, 0) , (0, 2, 1, 1) , (2, 0, 1, 1) , (2, 1, 1, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (3, 1, -1, -3) 


N^+( (3, 1, -1, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (1, 0, 2, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 0, 2) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (17, 1, -3, -15) 


N^+( (17, 1, -3, -15) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (1, 1, 0, 2) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (11, 7, -5, -13) 


N^+( (11, 7, -5, -13) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 0, 1) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (2, 2, 0, 0) , (2, 0, 2, 0) , (0, 2, 1, 1) , (2, 1, 1, 0) , (3, 1, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 15 )  OPS= (4, 1, 0, -5) 


N^+( (4, 1, 0, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/5  which is a wall.
There are 14 non-stable maximal sets of monomials of which, 13 are semistable
We have selected 13 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(7, -1, -1, -5)
(5, 1, 1, -7)
(3, 3, -1, -5)
(7, 3, -5, -5)
(3, 1, 1, -5)
(5, 1, -1, -5)
(1, 1, 1, -3)
(5, 5, -3, -7)
(5, -1, -1, -3)
(4, 1, 0, -5)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 0, -1, -4) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 0, 1, 2) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 3 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, -1, -1, -5) )
Monomials variety (potential closed orbit): (1, 0, 3, 0) , (2, 0, 0, 2) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, 1, -7) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (0, 0, 3, 1) , (2, 0, 0, 2) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 5 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 2, 2, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 3, -1, -5) )
Monomials variety (potential closed orbit): (0, 2, 2, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 0, 1) , (0, 3, 0, 1) , (1, 1, 2, 0) , (2, 0, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -5, -5) 


N^+( (7, 3, -5, -5) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (0, 3, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 3, -5, -5) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (0, 3, 0, 1) , (2, 0, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , (0, 0, 1, 0) , 


----------------------------------------------

========================================================

( 7 )  OPS= (3, 1, 1, -5) 


N^+( (3, 1, 1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 1, 1, -5) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 1, 0) , (3, 0, 0, 1) , (0, 1, 3, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, -1, -5) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (5, 1, -1, -5) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 2, 1, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, -1, -5) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (5, 1, -1, -5) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 2, 1, 1) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 5, -3, -7) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 0, 3, 0) , (2, 0, 0, 2) , (0, 1, 3, 0) , (1, 1, 0, 2) , 
Monomials divisor (potential closed orbit): (0, 1, 0, 0) , (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 11 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, -1, -1, -3) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 3, 1, 0) , (0, 1, 3, 0) , (1, 0, 0, 3) , (0, 4, 0, 0) , (0, 2, 2, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 12 )  OPS= (4, 1, 0, -5) 


N^+( (4, 1, 0, -5) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (4, 1, 0, -5) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 0, 3, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 13 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, -3, -3) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 0, 1, 2) , (0, 2, 2, 0) , (1, 0, 0, 3) , (0, 2, 1, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

Solution for t= 118/145  which is a chamber.
There are 15 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 11 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(5, 1, -1, -5)
(7, 3, 1, -11)
(1, 1, 1, -3)
(7, 3, -1, -9)
(5, 1, 1, -7)
(2, 1, -1, -2)
(5, 5, -3, -7)
(5, -1, -1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, 3, 1, -11) 


N^+( (7, 3, 1, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 8/9  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 12 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(5, 1, -1, -5)
(7, 3, 1, -11)
(1, 1, 1, -3)
(7, 3, -1, -9)
(9, 1, -3, -7)
(5, 1, 1, -7)
(2, 1, -1, -2)
(5, 5, -3, -7)
(5, -1, -1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, 3, 1, -11) 


N^+( (7, 3, 1, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, -1, -9) 


N^+( (7, 3, -1, -9) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 3, -1, -9) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 7 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 1, -3, -7) )
Monomials variety (potential closed orbit): (0, 2, 1, 1) , (1, 0, 1, 2) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 8 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 89/99  which is a chamber.
There are 16 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 12 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(5, 1, 1, -7)
(1, 1, 1, -3)
(7, 3, 1, -11)
(9, 1, -3, -7)
(11, 3, -1, -13)
(5, 1, -1, -5)
(2, 1, -1, -2)
(5, 5, -3, -7)
(5, -1, -1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (7, 3, 1, -11) 


N^+( (7, 3, 1, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 10/11  which is a wall.
There are 17 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 13 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(11, -1, -3, -7)
(5, 1, 1, -7)
(1, 1, 1, -3)
(7, 3, 1, -11)
(9, 1, -3, -7)
(11, 3, -1, -13)
(5, 1, -1, -5)
(2, 1, -1, -2)
(5, 5, -3, -7)
(5, -1, -1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, -1, -3, -7) 


N^+( (11, -1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, -1, -3, -7) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (1, 0, 0, 3) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (7, 3, 1, -11) 


N^+( (7, 3, 1, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 3, 1, -11) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 0, 3, 0) , (3, 0, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 7 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 131/143  which is a chamber.
There are 18 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 14 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 0, -1, -4)
(11, -1, -3, -7)
(5, 1, 1, -7)
(11, 7, -1, -17)
(1, 1, 1, -3)
(9, 1, -3, -7)
(11, 3, -1, -13)
(5, 1, -1, -5)
(2, 1, -1, -2)
(5, 5, -3, -7)
(19, 7, 3, -29)
(5, -1, -1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 0, -1, -4) 


N^+( (5, 0, -1, -4) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, -1, -3, -7) 


N^+( (11, -1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (11, 7, -1, -17) 


N^+( (11, 7, -1, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (9, 1, -3, -7) 


N^+( (9, 1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 1, 2, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (1, 0, 3, 0) , (1, 0, 2, 1) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 1, -1, -5) 


N^+( (5, 1, -1, -5) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (19, 7, 3, -29) 


N^+( (19, 7, 3, -29) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 13 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 14 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 12/13  which is a wall.
There are 16 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 12 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(19, 7, 3, -29)
(11, -1, -3, -7)
(5, 5, -3, -7)
(11, 7, -1, -17)
(13, 1, -3, -11)
(11, 3, -1, -13)
(5, 1, -3, -3)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, -1, -1, -3)
(5, 1, 1, -7)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (19, 7, 3, -29) 


N^+( (19, 7, 3, -29) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (11, -1, -3, -7) 


N^+( (11, -1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (11, 7, -1, -17) 


N^+( (11, 7, -1, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 1, -3, -11) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 0, 1, 2) , (0, 2, 1, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 7 )  OPS= (11, 3, -1, -13) 


N^+( (11, 3, -1, -13) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -1, -13) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 2, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 12 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 206/221  which is a chamber.
There are 15 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 11 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(11, -1, -3, -7)
(5, 5, -3, -7)
(11, 7, -1, -17)
(13, 1, -3, -11)
(19, 7, 3, -29)
(5, 1, -3, -3)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, -1, -1, -3)
(5, 1, 1, -7)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (11, -1, -3, -7) 


N^+( (11, -1, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (11, 7, -1, -17) 


N^+( (11, 7, -1, -17) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (19, 7, 3, -29) 


N^+( (19, 7, 3, -29) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, -1, -1, -3) 


N^+( (5, -1, -1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 28/29  which is a wall.
There are 14 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 10 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 1, -3, -3)
(1, 1, 1, -3)
(13, 1, -3, -11)
(19, 7, 3, -29)
(5, 1, 1, -7)
(2, 1, -1, -2)
(5, 5, -3, -7)
(29, -3, -7, -19)
(2, 1, 0, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (19, 7, 3, -29) 


N^+( (19, 7, 3, -29) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (19, 7, 3, -29) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 0, 3, 0) , (3, 0, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (29, -3, -7, -19) 


N^+( (29, -3, -7, -19) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (29, -3, -7, -19) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 0, 0, 3) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 10 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 57/58  which is a chamber.
There are 13 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(5, 1, -3, -3)
(1, 1, 1, -3)
(13, 1, -3, -11)
(5, 1, 1, -7)
(2, 1, -1, -2)
(5, 5, -3, -7)
(29, -3, -7, -19)
(2, 1, 0, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 1, -3, -3) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (13, 1, -3, -11) 


N^+( (13, 1, -3, -11) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 0, 3, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (29, -3, -7, -19) 


N^+( (29, -3, -7, -19) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 1  which is a wall.
There are 14 non-stable maximal sets of monomials of which, 7 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(5, 5, -3, -7)
(5, 1, -3, -3)
(2, 1, -1, -2)
(1, 1, 1, -3)
(29, -3, -7, -19)
(2, 1, 0, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 1, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 1, 0, 1) , (3, 0, 0, 1) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (1, 0, 3, 0) , (2, 0, 1, 1) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (1, 1, 0, 2) , (0, 3, 0, 1) , (1, 0, 1, 2) , (0, 2, 1, 1) , (0, 0, 3, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (1, 0, 3, 0) , (2, 0, 1, 1) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (1, 1, 0, 2) , (0, 3, 0, 1) , (1, 0, 1, 2) , (0, 2, 1, 1) , (0, 0, 3, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (1, 0, 3, 0) , (2, 0, 1, 1) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (1, 1, 0, 2) , (0, 3, 0, 1) , (1, 0, 1, 2) , (0, 2, 1, 1) , (0, 0, 3, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 0, -1, -2) )
Monomials variety (potential closed orbit): (0, 1, 3, 0) , (1, 0, 0, 3) , (0, 2, 1, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 0, 2, 1) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 0, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


N^0( (2, 1, -1, -2) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 0, 2, 1) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 7 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (29, -3, -7, -19) 


N^+( (29, -3, -7, -19) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (2, 1, 0, -3) 


N^+( (2, 1, 0, -3) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (2, 1, 0, -3) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (1, 1, 2, 0) , (3, 0, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

Solution for t= 47/46  which is a chamber.
There are 14 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 11 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(3, 0, -1, -2)
(5, 5, -3, -7)
(9, 5, -3, -11)
(5, 1, 1, -7)
(13, 5, 1, -19)
(2, 1, -1, -2)
(1, 1, 1, -3)
(29, -3, -7, -19)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (3, 0, -1, -2) 


N^+( (3, 0, -1, -2) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (1, 3, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 0, 0, 3) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 5, 1, -19) 


N^+( (13, 5, 1, -19) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (29, -3, -7, -19) 


N^+( (29, -3, -7, -19) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (2, 2, 0, 0) , (1, 1, 0, 2) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (2, 0, 2, 0) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 11 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 20/19  which is a wall.
There are 13 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 10 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(19, -1, -5, -13)
(5, 1, 1, -7)
(9, 5, -3, -11)
(5, 5, -3, -7)
(13, 5, 1, -19)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (19, -1, -5, -13) 


N^+( (19, -1, -5, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (19, -1, -5, -13) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (0, 2, 1, 1) , (1, 0, 0, 3) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (13, 5, 1, -19) 


N^+( (13, 5, 1, -19) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 1, 2, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (13, 5, 1, -19) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 1, 2, 0) , (3, 0, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 10 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 302/285  which is a chamber.
There are 12 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(19, -1, -5, -13)
(5, 1, 1, -7)
(9, 5, -3, -11)
(5, 5, -3, -7)
(2, 1, -1, -2)
(1, 1, 1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (19, -1, -5, -13) 


N^+( (19, -1, -5, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (2, 1, -1, -2) 


N^+( (2, 1, -1, -2) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 2, 0, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 0, 2, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 12/11  which is a wall.
There are 12 non-stable maximal sets of monomials of which, 3 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(19, -1, -5, -13)
(5, 1, 1, -7)
(9, 5, -3, -11)
(11, 3, -5, -9)
(5, 5, -3, -7)
(1, 1, 1, -3)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (19, -1, -5, -13) 


N^+( (19, -1, -5, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (9, 5, -3, -11) 


N^+( (9, 5, -3, -11) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , (2, 1, 1, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (9, 5, -3, -11) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (2, 1, 0, 1) , (2, 0, 2, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (11, 3, -5, -9) 


N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (11, 3, -5, -9) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (1, 0, 1, 2) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 7 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 350/319  which is a chamber.
There are 12 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 9 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(2, 0, -1, -1)
(5, 1, -3, -3)
(1, 1, 1, -3)
(19, -1, -5, -13)
(11, 3, -5, -9)
(5, 1, 1, -7)
(5, 5, -3, -7)
(5, 3, -1, -7)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 3, 0, 0) , (1, 1, 0, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (2, 1, 1, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 4, 0, 0) , (0, 3, 0, 1) , (1, 0, 2, 1) , (2, 2, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 2 )  OPS= (2, 0, -1, -1) 


N^+( (2, 0, -1, -1) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (1, 0, 0, 3) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (19, -1, -5, -13) 


N^+( (19, -1, -5, -13) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (11, 3, -5, -9) 


N^+( (11, 3, -5, -9) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 0, 1, 2) , (2, 1, 0, 1) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 3, 0, 0) , (1, 0, 2, 1) , (1, 1, 2, 0) , (1, 1, 0, 2) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 1, 3, 0) , (3, 0, 1, 0) , (2, 1, 1, 0) , (1, 2, 1, 0) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 8 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 9 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 8/7  which is a wall.
There are 10 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 8 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(7, -1, -1, -5)
(5, 5, -3, -7)
(7, 1, -3, -5)
(5, 1, 1, -7)
(1, 1, 1, -3)
(5, 3, -1, -7)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 1, 0, 2) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (0, 3, 0, 1) , (1, 0, 1, 2) , (1, 2, 0, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (1, 0, 0, 3) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 1, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 1, 3, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, -1, -1, -5) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (0, 0, 3, 1) , (1, 0, 0, 3) , (0, 2, 1, 1) , (0, 3, 0, 1) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 3 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (7, 1, -3, -5) )
Monomials variety (potential closed orbit): (0, 2, 0, 2) , (0, 1, 3, 0) , (1, 0, 0, 3) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 5 )  OPS= (5, 1, 1, -7) 


N^+( (5, 1, 1, -7) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, 1, -7) )
Monomials variety (potential closed orbit): (1, 0, 3, 0) , (3, 0, 0, 1) , (1, 3, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 7 )  OPS= (5, 3, -1, -7) 


N^+( (5, 3, -1, -7) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 3, 0, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 2, 1, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 3, -1, -7) )
Monomials variety (potential closed orbit): (0, 3, 1, 0) , (2, 0, 2, 0) , (3, 0, 0, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

========================================================

( 8 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 138/119  which is a chamber.
There are 8 non-stable maximal sets of monomials of which, 1 are semistable
We have selected 7 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(7, -1, -1, -5)
(5, 5, -3, -7)
(7, 1, -3, -5)
(1, 1, 1, -3)
(1, 1, -1, -1)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (7, -1, -1, -5) 


N^+( (7, -1, -1, -5) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 0, 4, 0) , (1, 1, 0, 2) , (1, 0, 2, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 0, 3, 1) , (1, 0, 3, 0) , (0, 3, 0, 1) , (1, 0, 1, 2) , (1, 2, 0, 1) , (2, 0, 2, 0) , (1, 1, 2, 0) , (2, 0, 1, 1) , (1, 0, 0, 3) , (1, 3, 0, 0) , (3, 1, 0, 0) , (2, 2, 0, 0) , (0, 2, 1, 1) , (1, 2, 1, 0) , (2, 1, 1, 0) , (0, 1, 3, 0) , (0, 4, 0, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (5, 5, -3, -7) 


N^+( (5, 5, -3, -7) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 0, 3, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 3, 0, 1) , (0, 2, 1, 1) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 1, 0, 2) , (1, 2, 1, 0) , (0, 1, 3, 0) , (1, 3, 0, 0) , (2, 0, 1, 1) , (2, 0, 2, 0) , (0, 2, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (7, 1, -3, -5) 


N^+( (7, 1, -3, -5) )
Monomials variety (general element): (0, 2, 0, 2) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 1, 2) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (1, 0, 0, 3) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 5 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 6 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

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( 7 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

Solution for t= 4/3  which is a wall.
There are 7 non-stable maximal sets of monomials of which, 5 are semistable
We have selected 6 destabilising test configurations
List of destabilising 1-parameter subgroups
(1, 0, 0, -1)
(1, 1, -1, -1)
(1, 1, 1, -3)
(3, -1, -1, -1)
(3, 3, -1, -5)
(5, 1, -3, -3)

List of 1-parameter subgroups and their corresponding set of monomials which are not stable:
+++++++++++++++++++++++++++++++++++++++++++++++


( 1 )  OPS= (1, 0, 0, -1) 


N^+( (1, 0, 0, -1) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 0, 3, 0) , (1, 3, 0, 0) , (2, 2, 0, 0) , (3, 0, 1, 0) , (0, 2, 2, 0) , (0, 4, 0, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (1, 2, 0, 1) , (0, 1, 3, 0) , (1, 0, 2, 1) , (2, 1, 0, 1) , (2, 0, 1, 1) , (2, 0, 2, 0) , (3, 1, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 0, 0, -1) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 1, 1, 1) , (2, 0, 0, 2) , (1, 2, 0, 1) , (0, 4, 0, 0) , (1, 0, 2, 1) , (0, 3, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 1, 0) , (0, 1, 0, 0) , 


----------------------------------------------

========================================================

( 2 )  OPS= (1, 1, -1, -1) 


N^+( (1, 1, -1, -1) )
Monomials variety (general element): (0, 3, 1, 0) , (1, 2, 0, 1) , (2, 1, 0, 1) , (3, 0, 1, 0) , (4, 0, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (2, 2, 0, 0) , (3, 0, 0, 1) , (1, 2, 1, 0) , (0, 3, 0, 1) , (0, 4, 0, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 3 )  OPS= (1, 1, 1, -3) 


N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (2, 1, 1, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (1, 1, 1, -3) )
Monomials variety (potential closed orbit): (0, 0, 4, 0) , (1, 0, 3, 0) , (2, 0, 2, 0) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 3, 1, 0) , (1, 1, 2, 0) , (1, 2, 1, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (0, 4, 0, 0) , (0, 2, 2, 0) , (0, 1, 3, 0) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , 


----------------------------------------------

N^+( (1, 1, 1, -3) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 0, 2, 1) , (2, 0, 2, 0) , (3, 0, 1, 0) , (1, 2, 1, 0) , (0, 2, 2, 0) , (0, 0, 4, 0) , (1, 1, 2, 0) , (1, 3, 0, 0) , (1, 2, 0, 1) , (0, 3, 1, 0) , (0, 1, 3, 0) , (2, 1, 0, 1) , (2, 2, 0, 0) , (0, 4, 0, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (0, 0, 3, 1) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is not semistable
----------------------------------------------

========================================================

( 4 )  OPS= (3, -1, -1, -1) 


N^+( (3, -1, -1, -1) )
Monomials variety (general element): (0, 0, 0, 4) , (0, 0, 1, 3) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 1, 3, 0) , (1, 1, 1, 1) , (1, 0, 3, 0) , (0, 1, 0, 3) , (2, 0, 1, 1) , (3, 0, 1, 0) , (0, 1, 2, 1) , (0, 0, 4, 0) , (0, 1, 1, 2) , (1, 0, 1, 2) , (0, 2, 1, 1) , (0, 3, 0, 1) , (1, 1, 2, 0) , (1, 0, 0, 3) , (2, 1, 0, 1) , (1, 2, 1, 0) , (0, 2, 0, 2) , (0, 2, 2, 0) , (0, 3, 1, 0) , (2, 2, 0, 0) , (2, 0, 2, 0) , (3, 1, 0, 0) , (1, 3, 0, 0) , (0, 0, 3, 1) , (2, 1, 1, 0) , (1, 0, 2, 1) , (0, 4, 0, 0) , (1, 2, 0, 1) , (1, 1, 0, 2) , (0, 0, 2, 2) , 
Monomials divisor (general element): (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, -1, -1, -1) )
Monomials variety (potential closed orbit): (0, 0, 0, 4) , (0, 0, 1, 3) , (0, 1, 0, 3) , (0, 2, 2, 0) , (0, 1, 1, 2) , (0, 0, 3, 1) , (0, 2, 1, 1) , (0, 1, 3, 0) , (0, 0, 2, 2) , (0, 3, 1, 0) , (0, 3, 0, 1) , (0, 0, 4, 0) , (0, 1, 2, 1) , (0, 2, 0, 2) , (0, 4, 0, 0) , 
Monomials divisor (potential closed orbit): (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 5 )  OPS= (3, 3, -1, -5) 


N^+( (3, 3, -1, -5) )
Monomials variety (general element): (0, 1, 2, 1) , (1, 1, 1, 1) , (2, 0, 0, 2) , (3, 0, 0, 1) , (4, 0, 0, 0) , (0, 2, 0, 2) , (1, 0, 2, 1) , (1, 3, 0, 0) , (2, 1, 0, 1) , (3, 0, 1, 0) , (0, 4, 0, 0) , (1, 1, 0, 2) , (0, 2, 1, 1) , (1, 0, 3, 0) , (1, 2, 0, 1) , (1, 1, 2, 0) , (0, 0, 4, 0) , (0, 2, 2, 0) , (2, 0, 1, 1) , (0, 1, 3, 0) , (0, 3, 1, 0) , (3, 1, 0, 0) , (0, 3, 0, 1) , (2, 2, 0, 0) , (2, 1, 1, 0) , (2, 0, 2, 0) , (1, 2, 1, 0) , 
Monomials divisor (general element): (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (3, 3, -1, -5) )
Monomials variety (potential closed orbit): (0, 1, 2, 1) , (0, 2, 0, 2) , (2, 0, 0, 2) , (1, 1, 0, 2) , (0, 0, 4, 0) , (1, 0, 2, 1) , 
Monomials divisor (potential closed orbit): (0, 1, 0, 0) , (1, 0, 0, 0) , 


----------------------------------------------

========================================================

( 6 )  OPS= (5, 1, -3, -3) 


N^+( (5, 1, -3, -3) )
Monomials variety (general element): (3, 1, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (3, 0, 1, 0) , (4, 0, 0, 0) , (0, 4, 0, 0) , (1, 3, 0, 0) , (2, 1, 0, 1) , (2, 0, 1, 1) , (3, 0, 0, 1) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 2, 0, 0) , (2, 1, 1, 0) , 
Monomials divisor (general element): (0, 0, 0, 1) , (0, 0, 1, 0) , (0, 1, 0, 0) , (1, 0, 0, 0) , 

The pair is strictly semistable
The potential closed orbit associated to this pair is:
N^0( (5, 1, -3, -3) )
Monomials variety (potential closed orbit): (0, 4, 0, 0) , (1, 2, 0, 1) , (2, 0, 0, 2) , (1, 2, 1, 0) , (2, 0, 2, 0) , (2, 0, 1, 1) , 
Monomials divisor (potential closed orbit): (0, 0, 0, 1) , (0, 0, 1, 0) , 


----------------------------------------------

========================================================

reached the end
OPS_set([(1, 0, 0, -1), (2, 0, -1, -1), (9, 5, 1, -15), (3, 0, -1, -2), (7, 3, -1, -9), (7, 1, -3, -5), (11, 3, -5, -9), (13, 5, -7, -11), (3, 1, 0, -4), (29, -3, -7, -19), (4, 0, -1, -3), (19, 3, -5, -17), (5, 0, -1, -4), (5, 5, -3, -7), (9, 5, -7, -7), (5, 1, -1, -5), (11, -1, -5, -5), (17, 5, -3, -19), (1, 1, -1, -1), (9, 5, -3, -11), (7, 3, -5, -5), (5, 1, 1, -7), (3, -1, -1, -1), (13, 9, 1, -23), (5, -1, -1, -3), (2, 1, -1, -2), (17, 1, -7, -11), (7, 3, 1, -11), (7, 7, -5, -9), (15, -1, -5, -9), (5, 5, 1, -11), (5, 1, -3, -3), (19, -1, -5, -13), (13, 1, -3, -11), (3, 1, -1, -3), (3, 1, 1, -5), (1, 1, 0, -2), (23, -1, -9, -13), (3, 3, -1, -5), (5, 3, -1, -7), (13, 5, 1, -19), (17, 1, -3, -15), (11, -1, -3, -7), (11, 3, -1, -13), (1, 1, 1, -3), (11, 7, -1, -17), (15, 3, -1, -17), (9, 1, -3, -7), (19, 7, 3, -29), (7, -1, -1, -5), (2, 1, 0, -3), (4, 1, 0, -5), (11, 7, -5, -13)])
