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

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

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

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

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