1 4
1---- = -----
3 3
2 5
1---- = -----
3 3
1 5
1---- = -----
4 4
2 6
1---- = -----
4 4
1 6
1---- = -----
5 5
----------------------------------------------------------------------------------------
8 1
----- = 1 -------
7 7
9 2
----- = 1 -------
7 7
10 3
----- = 1 -------
7 7
11 4
----- = 1 -------
7 7
12 5
----- = 1 -------
7 7