Are the bags open or closed?
The bags are open.
     src        edge_attr  dst
0      0               in   20
1      0   to the left of   11
2      0   to the left of   16
3      0   to the left of    1
4      0  to the right of    6
..   ...              ...  ...
145   20   to the left of    9
146   20   to the left of    8
147   20   to the left of    4
148   21   to the left of    1
149   21   to the left of   17

[150 rows x 3 columns]