11, 12, 13, 14, 15, 17, 18, 19, 21, 3, 5, 6, 8, 9
11, 12, 13, 14, 15, 17, 18, 19, 21, 3, 5, 6, 8, 9, 1, 10, 11, 13, 16, 17, 3, 4, 5, 6, 7, 8, 9