What shape is the lid?
The lid is rectangular.
    src        edge_attr  dst
0     0   to the left of   12
1     0  to the right of   14
2     0   to the left of    8
3     0   to the left of    6
4     0   to the left of    5
..  ...              ...  ...
87   17  to the right of   13
88   18  to the right of   12
89   20   to the left of    4
90   20   to the left of   13
91   20   to the left of    0

[92 rows x 3 columns]