On which side is the fork?
The fork is on the left of the image.
    src        edge_attr  dst
0     1               on    0
1     2   to the left of    8
2     2   to the left of    7
3     3   to the left of    4
4     3               on    2
5     4               on    6
6     4  to the right of    8
7     4  to the right of    3
8     5               on    0
9     5             with    6
10    5               of    6
11    6               on    5
12    7           beside    5
13    7               on    2
14    7  to the right of    2
15    8   to the left of    4
16    8  to the right of    2
17    8               on    2