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