Is the onion on the left?
Yes, the onion is on the left of the image.
    src        edge_attr  dst
0     0   to the left of   13
1     0   to the left of    5
2     4  to the right of    8
3     4  to the right of    6
4     4  to the right of   19
5     5  to the right of   12
6     5  to the right of    0
7     6   to the left of    4
8     6   to the left of   15
9     7  to the right of   10
10    7  to the right of   18
11    8   to the left of   16
12    8   to the left of    4
13    8  to the right of   19
14   10   to the left of    7
15   10   to the left of   11
16   10   to the left of   16
17   11  to the right of   10
18   11  to the right of   18
19   12   to the left of    5
20   12   to the left of   13
21   13  to the right of   12
22   13  to the right of    0
23   14  to the right of   19
24   15  to the right of    6
25   16  to the right of   10
26   16  to the right of   18
27   16  to the right of    8
28   18   to the left of   11
29   18   to the left of   16
30   18   to the left of    7
31   19   to the left of    4
32   19   to the left of    8
33   19   to the left of   14