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