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

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

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

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

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