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