Is the curtain on the right side?
No, the curtain is on the left of the image.
    src        edge_attr  dst
0     0  to the right of   20
1     1  to the right of    5
2     1   to the left of    7
3     2  to the right of   20
4     2  to the right of   15
5     5   to the left of    1
6     5   to the left of   14
7     5   to the left of    7
8     6  to the right of   14
9     6   to the left of   18
10    7  to the right of    1
11    7  to the right of    5
12    7   to the left of    8
13    7   to the left of   11
14    7   to the left of   18
15    8  to the right of   22
16    8  to the right of    7
17    9  to the right of   16
18    9  to the right of   22
19    9  to the right of   21
20   10  to the right of   18
21   10  to the right of   11
22   10   to the left of   13
23   11  to the right of    7
24   11   to the left of   10
25   11   to the left of   13
26   13  to the right of   18
27   13  to the right of   10
28   13  to the right of   11
29   14  to the right of    5
30   14   to the left of   18
31   14               on    7
32   14   to the left of    6
33   15   to the left of    2
34   16   to the left of    9
35   16  to the right of   17
36   17   to the left of   16
37   18  to the right of    6
38   18  to the right of    7
39   18   to the left of   10
40   18   to the left of   13
41   18  to the right of   14
42   20   to the left of    2
43   20   to the left of    0
44   21   to the left of    9
45   22   to the left of    9
46   22   to the left of    8