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

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

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

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

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