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

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

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

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

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