On which side is the rope?
The rope is on the left of the image.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of    2
2     1  to the right of    3
3     1  to the right of    2
4     2  to the right of    0
5     2   to the left of    1
6     2   to the left of    5
7     3  to the right of    0
8     3   to the left of    5
9     3   to the left of    1
10    5  to the right of    2
11    5  to the right of    3
12    5           inside    4