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

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

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

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

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