Is that clock dark and square?
No, the clock is dark but round.
    src        edge_attr  dst
0     0  to the right of   20
1     0               on    9
2     1   to the left of   10
3     1   to the left of    6
4     1   to the left of   14
..  ...              ...  ...
80   25   to the left of   14
81   26   to the left of   19
82   26   to the left of    2
83   26   to the left of    4
84   26   to the left of    7

[85 rows x 3 columns]