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

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

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

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

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