7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 1 1 7 7 7 7 1 1 1 1 7 7 7 1 1 1 1 0 7 7 1 1 0 0 0 0 7 7 1 1 0 0 0 0 7 7 1 1 0 0 0 0