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