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