Does the water look brown?
Yes, the water is brown.
    src        edge_attr  dst
0     2   to the left of   11
1     3   to the left of   11
2     3   to the left of   13
3     5   to the left of   15
4     9               in    8
5    11  to the right of    2
6    11  to the right of   14
7    11  to the right of    3
8    13  to the right of    3
9    14   to the left of   11
10   15  to the right of    5