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