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

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

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

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

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