-2 3 1 0 3 -2 -1 1
2 2 1 1 0 0 -1 -1
-1 2 -3 3 2 1 0 0
2 -1 0 3 2 2 2 2
-1 0 0 0 2 1 -1 1
3 -3 1 -2 2 -1 0 1