Are there any buckets or umbrellas?
Yes, there is an umbrella.
    src        edge_attr  dst
0     0   to the left of    1
1     1  to the right of    0
2     2  to the right of    8
3     2  to the right of    9
4     3  to the right of   13
5     3  to the right of    4
6     3  to the right of   14
7     4  to the right of   15
8     4  to the right of    9
9     4               on   14
10    4   to the left of    3
11    5               on   14
12    6  to the right of   12
13    7               on   14
14    8   to the left of    2
15    9   to the left of    2
16    9   to the left of   13
17    9   to the left of    4
18   12   to the left of    6
19   12  to the right of   15
20   13               on   14
21   13  to the right of   15
22   13  to the right of    9
23   13   to the left of    3
24   14   to the left of    3
25   15   to the left of    4
26   15          holding   14
27   15   to the left of   13
28   15               on    0
29   15   to the left of   12