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

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

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

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

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