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

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

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

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

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