4/9 + 3/9
1/11 +6/11
10/21 +5/21
7/15 +6/15
3/10 + 2/10
1/5 +2/5
3/7 + 3/7
3/13 +5/13
2/7 + 4/7
3/28 + 12/28
6/7
7/11
5/10
3/5
15/21
15/28
7/9
13/15
8/13
