6/9 = 2/312/15 = 4/518/21 = 6/730/33 = 10/1124/27 = 8/936/39 = 12/13
5/15 = 1/310/35 = 2/76/18 = 1/314/49 = 2/716/40 = 4/10100/200 = 1/2
6/9 = 2/3
12/15 = 4/5
18/21 = 6/7
30/33 = 10/11
24/27 = 8/9
36/39 = 12/13
5/15 = 1/3
10/35 = 2/7
6/18 = 1/3
14/49 = 2/7
16/40 = 4/10
100/200 = 1/2