Do you see any cows or fences?
No, there are no fences or cows.
    src        edge_attr  dst
0     1   to the left of   11
1     2   to the left of    5
2     2  to the right of   13
3     3  to the right of   12
4     5  to the right of    2
5     6  to the right of   12
6     7  to the right of   14
7     8         covering   10
8    10       covered by    8
9    11  to the right of    1
10   11  to the right of   12
11   12   to the left of   15
12   12   to the left of    3
13   12   to the left of    6
14   12   to the left of   11
15   13   to the left of    2
16   14   to the left of    7
17   15  to the right of   12