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

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

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

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

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