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