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