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

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

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

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

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