1, 2, 3, 4, 5
1 ... 6, 7, 8
1 ... 10, 11, 12
1 ... 91, 92, 93
1, 2, 3, 4
1 ... 4, 5, 6
1, 2
1 ... 16, 17, 18
1 ... 5, 6, 7
1, 2, 3