Are these ostriches or bears?
These are bears.
    src        edge_attr  dst
0     0             near    7
1     1   to the left of    4
2     1   to the left of    3
3     1   to the left of    6
4     1   to the left of    5
5     3               of    4
6     3  to the right of    1
7     4  to the right of    1
8     5  to the right of    1
9     6               of    4
10    6  to the right of    1
11    7             near    0