# {i,j,N | 1<=i<=N; 0<=j<=N-1; 2<=N}

6 5

1  1  0  0 -1

1 -1  0  1  0

1  0  1  0  0

1  0 -1  1 -1 

1  0  0  1 -2

1  0  0  0  1

# {i,j,N | 1<=i<=N; 1<=j<=N; 2<=N}

6 5

1  1  0  0 -1

1 -1  0  1  0

1  0  1  0 -1

1  0 -1  1  0

1  0  0  1 -2

1  0  0  0  1

# {i,j,N | 1<=i<=N; 0<=j<=N; 2<=N}

6 5

   1    0    0    1   -2

   1   -1    0    1    0

   1    0   -1    1    0

   1    1    0    0   -1

   1    0    1    0    0

   1    0    0    0    1