What is that piece of furniture called?
This is a cupboard.
    src        edge_attr  dst
0     0   to the left of   12
1     1   to the left of    5
2     1   to the left of    6
3     5  to the right of    7
4     5  to the right of    1
5     5   to the left of   12
6     6   to the left of   12
7     6  to the right of    7
8     6  to the right of    1
9     7   to the left of    5
10    7   to the left of    6
11   10   to the left of   12
12   12  to the right of   10
13   12  to the right of    5
14   12  to the right of    6
15   12  to the right of    0