Are there any forks in the picture?
No, there are no forks.
    src        edge_attr  dst
0     0  to the right of   11
1     1  to the right of    7
2     2  to the right of   12
3     2   to the left of    6
4     2   to the left of   10
5     2  to the right of    5
6     5   to the left of    2
7     6  to the right of    9
8     6  to the right of   15
9     6  to the right of   13
10    6  to the right of    2
11    6  to the right of   17
12    7             near    9
13    7   to the left of    9
14    7   to the left of    1
15    9   to the left of    6
16    9   to the left of   15
17    9  to the right of    7
18    9             near    7
19   10  to the right of    2
20   11   to the left of    0
21   11   to the left of   18
22   11   to the left of   13
23   12   to the left of    2
24   13  to the right of   11
25   13   to the left of    6
26   15  to the right of    9
27   15   to the left of    6
28   16          full of   14
29   17   to the left of    6
30   18  to the right of   11