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

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

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

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

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