Do you see any fences or electric toothbrushes?
Yes, there is a fence.
    src        edge_attr  dst
0     0   to the left of   19
1     0   to the left of   15
2     0   to the left of    8
3     1   to the left of   22
4     1   to the left of   10
..  ...              ...  ...
70   22  to the right of    1
71   22  to the right of    8
72   23  to the right of   13
73   23   to the left of   19
74   23  to the right of    3

[75 rows x 3 columns]