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