Which side are the paper towels on?
The paper towels are on the left of the image.
    src        edge_attr  dst
0     0  to the right of    7
1     0   to the left of    1
2     1               in    2
3     1  to the right of   12
4     1  to the right of    0
5     2               of    3
6     3  to the right of   13
7     3               in    2
8     5               in   12
9     6  to the right of   11
10    6               in    2
11    7   to the left of    0
12    8               in   14
13   10  to the right of   12
14   11               on    4
15   11   to the left of    6
16   12   to the left of    1
17   12   to the left of   14
18   12   to the left of   10
19   13   to the left of    3
20   14  to the right of   12