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