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