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

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

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

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

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