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