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

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

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

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

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