Do you see any grass or sand that are brown?
Yes, the grass is brown.
    src        edge_attr  dst
0     0  to the right of   12
1     0  to the right of    1
2     1   to the left of    0
3     2   to the left of    4
4     2            below    3
5     3        on top of    2
6     3   to the left of    4
7     3   on the back of    2
8     4  to the right of    2
9     4  to the right of    5
10    4  to the right of    3
11    5  to the right of    8
12    5   to the left of    4
13    6  to the right of    7
14    7   to the left of    6
15    7  to the right of    8
16    8   on the back of    2
17    8        on top of    2
18    8   to the left of    5
19    8   to the left of    9
20    8   to the left of    7
21    8   to the left of   10
22    9  to the right of   12
23    9      surrounding   10
24    9  to the right of    8
25   10  to the right of    8
26   10    surrounded by    9
27   12   to the left of    0
28   12   to the left of    9