Are there letters in the picture?
No, there are no letters.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of   11
2     1  to the right of    7
3     1   to the left of   21
4     1  to the right of   14
5     1   to the left of    0
6     2   to the left of    9
7     2   to the left of    5
8     3  to the right of    5
9     3  to the right of    9
10    4  to the right of   20
11    5         watching   10
12    5   to the left of    9
13    5   to the left of    3
14    5  to the right of    2
15    7   to the left of   11
16    7            below   12
17    7   to the left of    1
18    7   to the left of   14
19    9         watching   20
20    9   to the left of    3
21    9  to the right of    2
22    9  to the right of    5
23   10  to the right of   17
24   11  to the right of    7
25   11   to the left of    0
26   11   to the left of   21
27   11  to the right of   14
28   12            above    7
29   14   to the left of    1
30   14  to the right of    7
31   14   to the left of   11
32   14         watching   20
33   17   to the left of   10
34   17   to the left of   20
35   20   to the left of    4
36   20  to the right of   17
37   21  to the right of   22
38   21         watching   20
39   21  to the right of    1
40   21  to the right of   11
41   22  to the right of   23
42   22   to the left of   21
43   23   to the left of   22
44   23         watching   20
45   23   to the left of   25
46   24  to the right of   25
47   24         watching   20
48   25   to the left of   24
49   25  to the right of   23
50   25         watching   20