How does that ground look, black or tan?
The ground is tan.
    src        edge_attr  dst
0     0  to the right of   12
1     2   to the left of   13
2     2   to the left of   12
3     4  to the right of    6
4     5  to the right of   13
5     6  to the right of   10
6     6   to the left of    4
7     8   to the left of   13
8    10   to the left of   13
9    10   to the left of    6
10   10             near   13
11   10       looking at    2
12   11  to the right of   12
13   12  to the right of    2
14   12   to the left of    0
15   12   to the left of   11
16   13               by    2
17   13  to the right of    2
18   13   to the left of    5
19   13  to the right of    8
20   13  to the right of   10
21   13          next to   10