What is on the tape?
The can is on the tape.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of    1
2     0   to the left of   15
3     0   to the left of   14
4     1  to the right of    0
..  ...              ...  ...
79   19   to the left of   12
80   19   to the left of    1
81   20  to the right of    9
82   21   to the left of   17
83   21   to the left of   12

[84 rows x 3 columns]