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    src        edge_attr  dst
0     1   to the left of    4
1     1               on    4
2     1  to the right of   13
3     1  to the right of    6
4     2   to the left of   12
..  ...              ...  ...
60   17   to the left of   18
61   18  to the right of   17
62   18  to the right of    9
63   18  to the right of   12
64   18               by   12

[65 rows x 3 columns]