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