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

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

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

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

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