Are there any closed doors?
No, there are doors but they are open.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    9
2     0  to the right of    8
3     0  to the right of    6
4     0  to the right of   11
5     1               in    0
6     1  to the right of    5
7     1  to the right of    6
8     1  to the right of    8
9     1  to the right of   11
10    1  to the right of    7
11    1  to the right of    9
12    1  to the right of    3
13    3   to the left of    1
14    3  to the right of    7
15    3  to the right of   11
16    4             near   12
17    5   to the left of    1
18    6   to the left of    1
19    6   to the left of    0
20    7   to the left of    0
21    7   to the left of    3
22    7   to the left of    1
23    8   to the left of    1
24    8   to the left of    0
25    9   to the left of    1
26    9   to the left of    0
27   11   to the left of    1
28   11   to the left of    3
29   11   to the left of    0
30   12             near    4