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

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

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

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

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