Do you see a clock?
No, there are no clocks.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    3
2     0   to the left of    2
3     0  to the right of    6
4     1  to the right of   11
..  ...              ...  ...
57   17  to the right of    2
58   17  to the right of   11
59   17  to the right of    7
60   18  to the right of   11
61   19   to the left of    4

[62 rows x 3 columns]