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