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

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

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

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

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