Is the mirror brown?
Yes, the mirror is brown.
    src        edge_attr  dst
0     0   to the left of   20
1     0   to the left of    6
2     0   to the left of    2
3     0   to the left of    7
4     1   to the left of    2
..  ...              ...  ...
77   20   to the left of    7
78   20   to the left of    2
79   20   to the left of    6
80   20  to the right of    0
81   21   to the left of   12

[82 rows x 3 columns]