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