1 0 -1 1 1 0 -1 1 1 -1 1 1 -1 1 5 -6 2 1 3 -1 = 3 0 2 -3 = 3 2 -3 = 0 5 -6 = 7 -2 = 32 4 0 3 2 4 0 3 2 4 3 2 0 7 -2 -1 1 1 2 -1 1 1 2