Do the numbers have red color?
No, the numbers are gold.
    src        edge_attr  dst
0     0               of   11
1     1               of   11
2     2  to the right of   11
3     4   to the left of    5
4     4               on    7
5     5  to the right of    4
6     5  to the right of    9
7     6               of   11
8     7            below    8
9     8            above    7
10    9   to the left of    5
11   11   to the left of    2
12   11          holding    7