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

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

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

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

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