Are the letters white or red?
The letters are white.
    src        edge_attr  dst
0     0   to the left of   12
1     1   to the left of   12
2     1  to the right of    7
3     2  to the right of    7
4     2  to the right of    9
5     3   to the left of   11
6     4  to the right of    7
7     4   to the left of   11
8     6  to the right of    7
9     6   to the left of   11
10    7   to the left of    9
11    7   to the left of    4
12    7   to the left of    6
13    7   to the left of    2
14    7   to the left of    1
15    8   to the left of   12
16    9               on    7
17    9   to the left of    2
18    9  to the right of    7
19   11  to the right of    3
20   11  to the right of    6
21   11  to the right of    4
22   12  to the right of   13
23   12  to the right of    1
24   12  to the right of    0
25   12  to the right of    8
26   13   to the left of   12