Is the lid up or down?
The lid is down.
    src        edge_attr  dst
0     2   to the left of   11
1     3     covered with   10
2     3     covered with    4
3     3     covered with    2
4     6   to the left of   11
5     7   to the left of   11
6     8   to the left of   11
7    11  to the right of    8
8    11  to the right of    7
9    11  to the right of    6
10   11  to the right of    2