On which side is the brown bag?
The bag is on the left of the image.
   src        edge_attr  dst
0    0   to the left of    6
1    2   to the left of   10
2    3   to the left of    6
3    4   to the left of    5
4    5  to the right of    4
5    6  to the right of    0
6    6  to the right of    3
7   10   to the left of   11
8   10  to the right of    2
9   11  to the right of   10