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