Does that cake have rectangular shape and white color?
No, the cake is white but round.
    src        edge_attr  dst
0     0  to the right of    4
1     0               on    6
2     0   to the left of    5
3     1  to the right of    6
4     2  leaning against    1
5     4   to the left of    6
6     4   to the left of    0
7     4               on    3
8     5  to the right of    0
9     6  to the right of    4
10    6   to the left of    1