Do you see any fences?
No, there are no fences.
     src        edge_attr  dst
0      0   to the left of   11
1      0   to the left of   23
2      0   to the left of   18
3      0   to the left of    6
4      0  to the right of   10
..   ...              ...  ...
165   24   to the left of    0
166   24   to the left of    4
167   24   to the left of    6
168   24   to the left of   11
169   25   to the left of   12

[170 rows x 3 columns]