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