How tall do you think is the grass?
The grass is tall.
    src        edge_attr  dst
0     1  to the right of   12
1     1  to the right of    9
2     1   to the left of   15
3     1  to the right of    7
4     3  to the right of    7
5     4  to the right of    6
6     4  to the right of   12
7     4   to the left of   13
8     4   to the left of    8
9     4  to the right of    7
10    6   to the left of   12
11    6   to the left of    4
12    6   to the left of   14
13    6   to the left of   11
14    7   to the left of    4
15    7   to the left of    1
16    7   to the left of   11
17    7   to the left of   15
18    7   to the left of    3
19    8  to the right of   11
20    8  to the right of    4
21    9   to the left of    1
22   11  to the right of    7
23   11  to the right of   12
24   11   to the left of    8
25   11   to the left of   13
26   11  to the right of    6
27   12   to the left of   11
28   12   to the left of    1
29   12   to the left of    4
30   12  to the right of    6
31   12   to the left of   14
32   13  to the right of   11
33   13  to the right of    4
34   14  to the right of    6
35   14  to the right of   12
36   15  to the right of    1
37   15  to the right of    7