12, 14, 15, 3, 7, 9
12, 14, 15, 3, 7, 9, 1, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 20, 26, 27, 28, 29, 3, 31, 5, 6, 7, 8, 9