(0 6 4)(1 21 19 16 14 10 7)(2 12 3)(5 11 8)(9 15 13)(17 20 18)
ALLOWS (11/8)-SEQUENCE
1: (0 6 9)
(0 15 13 9 4)(1 21 19 16 14 10 7)(2 12 3)(5 11 8)(6)(17 20 18)
2: (1 21 7)
(0 15 13 9 4)(1)(2 12 3)(5 11 8)(6)(7 19 16 14 10)(17 20 18)(21)
3: (5 11 8)
(0 15 13 9 4)(1)(2 12 3)(5)(6)(7 19 16 14 10)(8)(11)(17 20 18)(21)
4: (4 13 9)
(0 15 13)(1)(2 12 3)(4)(5)(6)(7 19 16 14 10)(8)(9)(11)(17 20 18)(21)