Does the ground look white?
No, the ground is brown.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    5
2     1   to the left of    7
3     1   to the left of    5
4     2  to the right of   10
5     2  to the right of    9
6     3   to the left of   10
7     3   to the left of    9
8     3   to the left of   11
9     3         covering    8
10    4   to the left of    5
11    4   to the left of    7
12    5  to the right of    1
13    5  to the right of    0
14    5  to the right of    4
15    7  to the right of    0
16    7  to the right of    1
17    7  to the right of    4
18    8       covered by    3
19    9   to the left of    2
20    9  to the right of    3
21   10  to the right of    3
22   10   to the left of    2
23   11  to the right of    3