Do you see any closed doors or windows?
Yes, there is a closed door.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    7
2     0  to the right of    8
3     0   to the left of   15
4     1   to the left of    9
5     1   to the left of    6
6     2  to the right of   16
7     6  to the right of    1
8     7  to the right of    0
9     7   to the left of   10
10    7  to the right of   11
11    8   to the left of   11
12    8   to the left of    0
13    9  to the right of    1
14   10  to the right of   15
15   10  to the right of   11
16   10  to the right of    7
17   11   to the left of    7
18   11   to the left of   10
19   11  to the right of    0
20   11   to the left of   15
21   11  to the right of    8
22   15   to the left of   10
23   15  to the right of    0
24   15  to the right of   11
25   16   to the left of    2