1, 2, 3, 4, 5
1, 2, 3, 4, 5, 1, 10, 11, 12, 15, 16, 17, 18, 2, 21, 22, 25, 29, 3, 33, 35, 37, 38, 39, 4, 40, 47, 5, 6, 7, 8