Is the fork on the right side?
No, the fork is on the left of the image.
    src        edge_attr  dst
0     1  to the right of    7
1     1   to the left of    5
2     3   to the left of    4
3     4  to the right of    3
4     5  to the right of    7
5     5  to the right of    1
6     5  to the right of    8
7     7               on    0
8     7   to the left of    1
9     7       wrapped in    3
10    7   to the left of    5
11    8   to the left of    5