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

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

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

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

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