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