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

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

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

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

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