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