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