1, 2, 3, 4, 5, 6, 6а, 7
1, 2, 3, 4, 5, 6, 6а, 7, 16, 17, 18, 19, 20, 21
1, 2, 3, 4, 5, 6, 6а, 7, 16, 17, 18, 19, 20, 21, 10, 11, 12, 12а, 13, 14, 15, 8, 9