Is the clock black or red?
The clock is black.
     src        edge_attr  dst
0      0               on   17
1      0   to the left of    3
2      1   to the left of    3
3      1               on   17
4      2   to the left of   33
..   ...              ...  ...
132   33   to the left of    4
133   33  to the right of    2
134   34  to the right of   26
135   34   to the left of   12
136   34  to the right of   11

[137 rows x 3 columns]