1, 11, 12, 15, 2, 2а, 3, 4, 5, 6, 7, 9
1, 11, 12, 15, 2, 2а, 3, 4, 5, 6, 7, 9, 1, 2
1, 11, 12, 15, 2, 2а, 3, 4, 5, 6, 7, 9, 1, 2, 1, 2, 3, 4