Is the fence in the top part or in the bottom of the picture?
The fence is in the bottom of the image.
    src        edge_attr  dst
0     0  to the right of    3
1     0   to the left of    2
2     0  to the right of    4
3     2  to the right of    7
4     2  to the right of    0
5     3  to the right of    4
6     3   to the left of    0
7     3  to the right of    6
8     4   to the left of    7
9     4   to the left of    0
10    4   to the left of    3
11    5  to the right of    9
12    6   to the left of    3
13    6   to the left of    9
14    7  to the right of    4
15    7   to the left of    2
16    9  to the right of    6
17    9   to the left of    5