1, 2, 2а, 2б, 2в, 3, 5, 7
1, 2, 2а, 2б, 2в, 3, 5, 7, 1, 2, 3, 5
1, 2, 2а, 2б, 2в, 3, 5, 7, 1, 2, 3, 5, 1, 2, 3, 4, 6