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

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

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

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

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