2, 4, 6
0, 1, 2, 3, 4
2, 4, 6, 8, 10, 12, 14, 16, 18
4, 6, 8, 10, 12, 14, 16, 18
1, 2, 4, 6, 8, 10, 12, 14, 16, 18
6, 8, 10, 12, 14, 16, 18
6, 8, 10, 12, 14, 16, 38, 40, 42