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