2 3
 1  0 -1
 0  1 -1
2 3
 1  0 -2
 0  1 -1
2 4
 1 -1  0  1
 0  0  1 -1
2 4
 1  0  0 -1
 0  1 -1  0
2 4
 1  0 -1 -1
 0  1 -1  1
2 5
 1  0  0 -1  1
 0  1 -1  0  1
2 3
 1  0 -3
 0  1 -2
2 4
 1  0  0 -2
 0  1 -1  1
2 5
 1  0  0 -1 -1
 0  1 -1  1 -1
2 6
 1  0  1 -1  0 -1
 0  1 -1  1 -1  0
2 4
 1  0 -1 -1
 0  1  1 -2
2 5
 1  0 -1  1 -1
 0  1  1 -1 -1
2 3
 1  1 -3
 0  2 -2
2 4
 1  0 -2  1
 0  1  1 -2
2 4
 1  1 -1 -1
 0  2 -2  0
2 3
 1  1 -2
 0  3 -3
