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