What size is the plane?
The plane is small.
   src        edge_attr  dst
0    0  to the right of    8
1    1   to the left of    7
2    1   to the left of    9
3    3               in    9
4    3  to the right of    7
5    7   to the left of    3
6    7  to the right of    1
7    8   to the left of    0
8    9  to the right of    1