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

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

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

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

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