Is there any flag or clock in the image?
No, there are no clocks or flags.
   src        edge_attr  dst
0    2  to the right of   11
1    6   to the left of    7
2    7  to the right of    6
3    8               at   12
4    9   to the left of   12
5   11   to the left of    2
6   11               of   10
7   12  to the right of    9