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

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

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

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

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