Do the trunks seem to be standing?
Yes, the trunks are standing.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of    3
2     1       grazing on    7
3     1  to the right of    3
4     3       grazing on    7
5     3   to the left of    1
6     3  to the right of    0
7     5       grazing on    7
8     5  to the right of    0
9     5               on    7
10    5  to the right of    6
11    6   to the left of    9
12    6   to the left of    5
13    9               on    2
14    9  to the right of    6
15   11               on   10