Is the fork in the bottom or in the top part?
The fork is in the top of the image.
    src        edge_attr  dst
0     2  to the right of   11
1     2  to the right of    5
2     2               on    5
3     3               on    4
4     3   to the left of    8
5     4             with    3
6     4   to the left of    8
7     5               on   10
8     5             with    6
9     5             with   12
10    5             with    9
11    5             with    2
12    5             with   11
13    5   to the left of    2
14    5   to the left of    6
15    5  to the right of    7
16    6  to the right of   12
17    6  to the right of    5
18    6               on    5
19    7               on    1
20    7   to the left of    5
21    8  to the right of    3
22    8  to the right of    4
23    8  to the right of   13
24    8               on    1
25    9               on    5
26   10             with    5
27   11               on    5
28   11   to the left of    2
29   12   to the left of    6
30   12               on    5
31   13   to the left of    8