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