1, 2, 3

1, 2, 3, 1, 1-10, 10, 11, 12, 12-28, 12а, 13, 14, 15, 16, 17, 18, 19, 2, 20, 21, 22, 23, 24, 25, 26, 27, 3, 4, 5, 6, 7, 8, 9