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

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

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

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

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