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