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