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