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

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

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

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

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