Do you see any clocks there?
No, there are no clocks.
     src        edge_attr  dst
0      0  to the right of   13
1      0  to the right of   14
2      0   to the left of    2
3      0   to the left of    3
4      0   to the left of    7
..   ...              ...  ...
103   22  to the right of   17
104   22   to the left of   18
105   25  to the right of    9
106   25  to the right of    5
107   25   to the left of    4

[108 rows x 3 columns]