Do you see either any locks or benches?
Yes, there is a bench.
     src        edge_attr  dst
0      0  to the right of    5
1      0  to the right of    8
2      1  to the right of    8
3      1   to the left of    3
4      1   to the left of   25
..   ...              ...  ...
103   25  to the right of    1
104   25  to the right of    8
105   26  to the right of   16
106   26  to the right of    4
107   26  to the right of   23

[108 rows x 3 columns]