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