On which side of the picture are the controllers?
The controllers are on the right of the image.
    src        edge_attr  dst
0     1  to the right of   10
1     1  to the right of    2
2     2   to the left of    5
3     2   to the left of    1
4     5  to the right of    2
5     8               on    9
6     8  to the right of   10
7     9   to the left of   10
8    10  to the right of    9
9    10   to the left of    8
10   10   to the left of    1