1, 2
1, 2, 1, 10, 12, 13, 16, 17, 18, 19, 19а, 2, 20, 21, 22, 24, 26, 29, 3, 31а, 33, 36, 37, 38, 39, 3а, 4, 40, 41, 43, 45, 47, 49, 5, 51, 7, 8, 9