Are there any square cakes or bowls?
Yes, there is a square cake.
    src        edge_attr  dst
0     0  to the right of   21
1     0  to the right of   19
2     0               on    3
3     0  to the right of   22
4     1               on   20
5     2   to the left of    3
6     3  to the right of    2
7     3  to the right of   21
8     3  to the right of   19
9     3  to the right of   22
10    4   to the left of   16
11    4   to the left of   12
12    4   to the left of    9
13    5  to the right of   10
14    5  to the right of   14
15    6   to the left of   10
16    6   to the left of   14
17    9  to the right of    4
18   10   to the left of    5
19   10  to the right of    6
20   11   to the left of   18
21   12  to the right of    4
22   14               in   15
23   14   to the left of    5
24   14  to the right of    6
25   15  to the right of   17
26   16  to the right of    4
27   17   to the left of   15
28   18  to the right of   11
29   18               in   15
30   19   to the left of    3
31   19   to the left of    0
32   21   to the left of    3
33   21   to the left of    0
34   22   to the left of    0
35   22   to the left of    3
36   22        on top of   20