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