Is there any brown mud or grass?
No, there is grass but it is green.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   12
2     0  to the right of   14
3     0               on    6
4     1   to the left of   15
5     1   to the left of    6
6     2   to the left of    8
7     3  to the right of    6
8     4  to the right of   15
9     4  to the right of   10
10    4  to the right of    6
11    6   to the left of    4
12    6   to the left of   11
13    6   to the left of   10
14    6  to the right of    1
15    6  to the right of   13
16    6  to the right of    9
17    6   to the left of    3
18    6   to the left of   12
19    7  to the right of    9
20    8  to the right of    2
21    9   to the left of    7
22    9   to the left of    6
23   10  to the right of    6
24   10   to the left of    4
25   11  to the right of    6
26   11  to the right of    0
27   12  to the right of    6
28   12  to the right of   14
29   12               of    6
30   12  to the right of    0
31   13   to the left of   15
32   13   to the left of    6
33   14               on    6
34   14   to the left of    0
35   14   to the left of   12
36   15  to the right of   13
37   15  to the right of    1
38   15   to the left of    4
39   15               of    6