What color do you think the frosting is?
The frosting is white.
    src        edge_attr  dst
0     0   to the left of    7
1     0   to the left of    5
2     0        on top of    1
3     0  to the right of    8
4     0   to the left of    4
5     2   to the left of    7
6     2   to the left of    3
7     2   to the left of    4
8     2   to the left of    5
9     3  to the right of    4
10    3  to the right of    2
11    4  to the right of    2
12    4   to the left of    3
13    4  to the right of    0
14    5  to the right of    0
15    5  to the right of    2
16    6  to the right of    8
17    7  to the right of    2
18    7  to the right of    0
19    8   to the left of    0
20    8   to the left of    6