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