1, 13, 16, 17, 2, 3, 4, 5, 6
1, 13, 16, 17, 2, 3, 4, 5, 6, 1, 10, 11, 15, 16, 17, 18, 19, 2, 21, 22, 23, 24, 25, 26, 27, 28, 29, 3, 30, 35, 38, 4, 40, 41, 5, 6, 8, 9