Is the grass short and green?
Yes, the grass is short and green.
    src        edge_attr  dst
0     0   to the left of    6
1     0  to the right of    1
2     0  to the right of    8
3     1  to the right of    7
4     1   to the left of    6
5     1  to the right of    8
6     1   to the left of    0
7     2   to the left of    3
8     3  to the right of    2
9     4  to the right of    8
10    4   to the left of    6
11    6               on    5
12    6  to the right of    1
13    6  to the right of    0
14    6  to the right of    4
15    7   to the left of    1
16    8   to the left of    0
17    8   to the left of    1
18    8   to the left of    4