1/1, 1/2, 10, 11, 12, 13, 15, 17/1, 17/2, 19, 2, 21, 23/1, 23/2, 25, 27, 29, 3, 31, 33, 37, 39, 4, 41, 43, 45/1, 45/2, 47, 49, 5/2, 51, 53, 55, 6, 7, 8, 9/1, 9/2