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

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

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

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

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