único
1, 2
4, 6, 8, 10, 12, 14, 16, 18
1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18
2, 4, 6
3, 4, 6, 8, 10, 12, 14, 16, 18, 20
6, 8, 10, 12, 14, 16, 18
6, 8, 10, 12, 14, 16, 20, 38, 40, 42, 44, 46, 48
6, 8, 10, 12, 14
1, 2, 4, 6, 8, 10, 12, 14, 16, 18
1, 2, 3, 4
