Do you think the grass is green or brown?
The grass is green.
    src        edge_attr  dst
0     1  to the right of   11
1     3   to the left of    5
2     3  to the right of   10
3     4  to the right of    8
4     4   to the left of    5
5     4               on    0
6     4  to the right of    7
7     5  to the right of    4
8     5  to the right of    3
9     6  to the right of   11
10    7   to the left of    4
11    8   to the left of   10
12    8   to the left of    4
13   10   to the left of    3
14   10  to the right of    8
15   11   to the left of    6
16   11   to the left of    1