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

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

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

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

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