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

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

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

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

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