Do you see letters or fences that are black?
Yes, the letters are black.
    src        edge_attr  dst
0     0               on   10
1     0  to the right of   10
2     1               in    2
3     1   to the left of   10
4     2   to the left of   10
5     3               on   10
6     3  to the right of    9
7     3  to the right of   10
8     3  to the right of    8
9     4           behind   10
10    4   to the left of   10
11    5               on   10
12    5               in    2
13    5  to the right of   10
14    6  to the right of    9
15    6  to the right of    8
16    6   to the left of   11
17    6  to the right of   10
18    6               on    3
19    7               on    3
20    7  to the right of   10
21    8   to the left of    3
22    8   to the left of    6
23    9               on   10
24    9   to the left of    6
25    9   to the left of    3
26   10   to the left of    7
27   10   to the left of   11
28   10      in front of    4
29   10  to the right of    1
30   10  to the right of    2
31   10   to the left of    3
32   10  to the right of    4
33   10   to the left of    5
34   10   to the left of    6
35   10   to the left of    0
36   11  to the right of   10
37   11  to the right of    6