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