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

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

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

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

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