Where do you think are the cows?
The cows are in the pasture.
    src        edge_attr  dst
0     1  to the right of    9
1     2   to the left of   10
2     2   to the left of    3
3     3               in    6
4     3   to the left of    9
5     3               on   11
6     3  to the right of    2
7     4   to the left of    8
8     5               in    0
9     8  to the right of    4
10    9  to the right of    3
11    9  to the right of   10
12    9   to the left of    1
13   10  to the right of    2
14   10   to the left of    9