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

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

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

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

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