Is the curtain on the left or on the right?
The curtain is on the left of the image.
    src        edge_attr  dst
0     0  to the right of    1
1     1     hanging over    0
2     1   to the left of    5
3     1   to the left of    4
4     1   to the left of    0
5     1   to the left of    2
6     1   to the left of    6
7     2               in    0
8     2  to the right of    1
9     4  to the right of    1
10    5  to the right of    1
11    6  to the right of    1