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

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

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

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

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