Do you see brown mud or grass?
No, there is grass but it is green.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    4
2     0  to the right of    6
3     0  to the right of    5
4     1  to the right of   12
5     1  to the right of    7
6     1  to the right of    6
7     1  to the right of   10
8     2   to the left of   11
9     3   to the left of   12
10    3   to the left of    4
11    3   to the left of    6
12    3   to the left of    5
13    3   to the left of    7
14    3   to the left of   10
15    3   to the left of    8
16    4   to the left of    0
17    4  to the right of    3
18    4   to the left of    6
19    5   to the left of    0
20    5  to the right of    3
21    5   to the left of    6
22    6   to the left of    0
23    6   to the left of    1
24    6  to the right of    7
25    6  to the right of    5
26    6  to the right of    4
27    6  to the right of    3
28    6  to the right of    8
29    7   to the left of   11
30    7  to the right of    3
31    7   to the left of    1
32    7   to the left of    6
33    7   to the left of    0
34    8  to the right of    3
35    8   to the left of    6
36    9               of    6
37    9               of    0
38    9               of    4
39    9               of    5
40    9               of    3
41   10  to the right of    3
42   10   to the left of    1
43   10   to the left of   11
44   10             near   11
45   11  to the right of    7
46   11  to the right of    2
47   11  to the right of   10
48   11  to the right of   12
49   11             near   10
50   12   to the left of    1
51   12  to the right of    3
52   12   to the left of   11