5/3

−(1/6) Z

−(1/12) Z

−(1/12) Z

9/5

−(1/20) Z

−(1/40) Z

−(1/40) Z

13/7

−(1/42) Z

−(1/84) Z

−(1/84) Z

17/9

−(1/72) Z

−(1/144) Z

−(1/144) Z