Do you see hats there?
Yes, there is a hat.
     src        edge_attr  dst
0      0   to the left of   22
1      0   to the left of   17
2      0   to the left of    4
3      0  to the right of    2
4      0  to the right of    6
..   ...              ...  ...
112   22  to the right of    6
113   22  to the right of    2
114   22  to the right of    0
115   22   to the left of   17
116   22  to the right of    9

[117 rows x 3 columns]