21, 23, 3, 31, 5
21, 23, 3, 31, 5, 1, 10, 11, 13, 15, 18, 2, 22, 24, 26, 3, 30, 32, 35, 36, 37, 4, 42, 44, 48, 6, 7, 8, 9