On which side are the green onions?
The onions are on the left of the image.
    src        edge_attr  dst
0     0   to the left of    2
1     1   to the left of    5
2     1  to the right of   21
3     2  to the right of   11
4     2  to the right of    0
5     4   to the left of    7
6     4   to the left of    8
7     5   to the left of   13
8     5  to the right of   12
9     5   to the left of   20
10    5  to the right of    7
11    5  to the right of    1
12    6               on   18
13    6               on   21
14    7  to the right of    4
15    7  to the right of   12
16    7   to the left of    5
17    8  to the right of    4
18   10   to the left of   17
19   11   to the left of    2
20   12   to the left of    5
21   12   to the left of    7
22   13  to the right of    5
23   14  to the right of   18
24   16  to the right of   21
25   16               of    0
26   17  to the right of   10
27   18   to the left of   14
28   20  to the right of    5
29   21   to the left of    1
30   21   to the left of   16