-1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-1 0 1 2 3 4 5 6 7 8 9
-1 1 0 1 2 3 4 5 6 7 8
-1 2 1 0 1 2 3 4 5 6 7
-1 3 2 1 0 1 2 3 4 5 6
-1 4 3 2 1 0 1 2 3 4 5
-1 5 4 3 2 1 0 1 2 3 4
-1 6 5 4 3 2 1 0 1 2 3
-1 7 6 5 4 3 2 1 0 1 2
-1 8 7 6 5 4 3 2 1 0 1
-1 9 8 7 6 5 4 3 2 1 0