What's the giraffe doing?
The giraffe is bending.
   src        edge_attr  dst
0    1  to the right of    9
1    1   to the left of    6
2    6  to the right of   13
3    6  to the right of    1
4    9   to the left of    1
5   12  to the right of   13
6   13   to the left of    6
7   13   to the left of   12