Are the green boxes on the right of the image?
Yes, the boxes are on the right of the image.
    src        edge_attr  dst
0     0   to the left of   12
1     0   to the left of   14
2     0   to the left of    6
3     0   to the left of    2
4     1   to the left of   15
..  ...              ...  ...
69   18  to the right of   12
70   19   to the left of   13
71   19               on    5
72   19      in front of   18
73   19  to the right of    2

[74 rows x 3 columns]