On which side is the black container?
The container is on the right of the image.
    src        edge_attr  dst
0     0  to the right of    2
1     0   to the left of    1
2     0   to the left of   11
3     1  to the right of    0
4     1  to the right of   12
5     1  to the right of   10
6     2   to the left of   12
7     2   to the left of    0
8     2   to the left of   10
9     3   to the left of    7
10    5   to the left of    8
11    7  to the right of    3
12    8  to the right of    5
13    8  to the right of   10
14    9  to the right of   14
15    9   to the left of   10
16   10  to the right of   14
17   10   to the left of    8
18   10  to the right of    2
19   10  to the right of    9
20   10   to the left of    1
21   11  to the right of    0
22   12  to the right of    2
23   12   to the left of    1
24   14   to the left of   10
25   14   to the left of    9