What color do you think is the grass?
The grass is green.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of   11
2     0  to the right of    9
3     1  to the right of    3
4     1   to the left of    0
5     1   to the left of    6
6     1   to the left of    4
7     2               on    8
8     2   to the left of   10
9     3   to the left of   11
10    3   to the left of    9
11    3   to the left of    1
12    4   to the left of    6
13    4  to the right of    1
14    6  to the right of    4
15    6  to the right of    1
16    6  to the right of   11
17    8   to the left of   10
18    9   to the left of    0
19    9  to the right of    3
20   10  to the right of    2
21   10               by    8
22   10  to the right of    8
23   11   to the left of    0
24   11  to the right of    3
25   11   to the left of    6