Is there any brown grass or sand?
Yes, there is brown grass.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of    3
2     1   to the left of   12
3     1   to the left of    9
4     1  to the right of    4
..  ...              ...  ...
59   18   to the left of   13
60   19   to the left of   16
61   19  to the right of   17
62   19  to the right of    7
63   19  to the right of    8

[64 rows x 3 columns]