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