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

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

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

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

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