Do you see numbers in the image?
Yes, there are numbers.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of   11
2     0  to the right of   17
3     0  to the right of    1
4     0   to the left of   15
..  ...              ...  ...
68   18   to the left of    5
69   18   to the left of    2
70   18   to the left of   11
71   18   to the left of    7
72   18   to the left of    8

[73 rows x 3 columns]