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