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

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

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

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

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