(0 20 18)(1 21 9 6 3)(2 5 4)(7 11 10)(8 15 12 16 13)(14 19 17)
ALLOWS (11/8)-SEQUENCE
1: (0 8 15)

(0 12 16 13 8 20 18)(1 21 9 6 3)(2 5 4)(7 11 10)(14 19 17)(15)
2: (6 21 9)

(0 12 16 13 8 20 18)(1 21 3)(2 5 4)(6)(7 11 10)(9)(14 19 17)(15)
3: (8 20 12)

(0 12 18)(1 21 3)(2 5 4)(6)(7 11 10)(8 16 13)(9)(14 19 17)(15)(20)
4: (8 16 13)

(0 12 18)(1 21 3)(2 5 4)(6)(7 11 10)(8)(9)(13)(14 19 17)(15)(16)(20)