Is the monitor on the left side or on the right?
The monitor is on the right of the image.
   src        edge_attr  dst
0    0  to the right of    3
1    0  to the right of    1
2    1   to the left of    0
3    3   to the left of    0
4    3   to the left of    4
5    3               on    2
6    4  to the right of    3