Could this place be a store?
Yes, it is a store.
     src        edge_attr  dst
0      0  to the right of    3
1      0  to the right of   10
2      0   to the left of    7
3      0   to the left of   20
4      0  to the right of   25
..   ...              ...  ...
138   33  to the right of   29
139   33  to the right of   18
140   33   to the left of   11
141   33  to the right of   14
142   33  to the right of   16

[143 rows x 3 columns]