10, 12, 14, 16, 2, 4, 6, 8
10, 12, 14, 16, 2, 4, 6, 8, 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 2, 20, 22, 24, 26, 28, 3, 30, 32, 34, 36, 38, 4, 40, 5, 6, 7, 8, 9