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