Is the flag on the right side?
No, the flag is on the left of the image.
     src        edge_attr  dst
0      0  to the right of    1
1      0  to the right of   30
2      1   to the left of    0
3      1   to the left of   31
4      1   to the left of   32
..   ...              ...  ...
127   31  to the right of   18
128   32  to the right of   30
129   32  to the right of    1
130   33   to the left of    8
131   33  to the right of   30

[132 rows x 3 columns]