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

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

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

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

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