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

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

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

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

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