What color is the frosting?
The frosting is white.
   src        edge_attr  dst
0    1  to the right of    8
1    1  to the right of    6
2    2   to the left of    5
3    4            above    7
4    5  to the right of    2
5    6   to the left of    1
6    7            under    4
7    8   to the left of    1