How large is the window?
The window is large.
   src        edge_attr  dst
0    0  to the right of    2
1    0  to the right of    4
2    1  to the right of    2
3    2  to the right of    4
4    2   to the left of    0
5    2   to the left of    1
6    4   to the left of    2
7    4   to the left of    0