Does that rug look dark?
Yes, the rug is dark.
    src        edge_attr  dst
0     0   to the left of   20
1     0   to the left of   14
2     2  to the right of   10
3     4  to the right of   20
4     5  to the right of   20
5     5  to the right of   12
6     5  to the right of   11
7     7   to the left of   13
8     8   to the left of   13
9     9               on    7
10   10   to the left of   14
11   10   to the left of    2
12   10   to the left of   20
13   11   to the left of    5
14   11  to the right of   14
15   11   to the left of   12
16   12  to the right of   11
17   12   to the left of    5
18   13  to the right of   17
19   13  to the right of    8
20   13  to the right of   20
21   13  to the right of    7
22   13  to the right of   18
23   14   to the left of   11
24   14   to the left of   20
25   14  to the right of    0
26   14  to the right of   10
27   14  to the right of   19
28   17   to the left of   13
29   18   to the left of   13
30   18  to the right of   20
31   19   to the left of   14
32   20   to the left of    4
33   20  to the right of   14
34   20  to the right of   10
35   20   to the left of   13
36   20  to the right of    0
37   20   to the left of    5
38   20   to the left of   18