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

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

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

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

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