Do the trees look leafy?
Yes, the trees are leafy.
    src        edge_attr  dst
0     4   to the left of    6
1     4  to the right of    5
2     4   to the left of   10
3     4   to the left of    7
4     5   to the left of    4
5     5   to the left of    7
6     5   to the left of    6
7     5   to the left of   10
8     6  to the right of    5
9     6  to the right of    4
10    6  to the right of    8
11    6  to the right of    7
12    7  to the right of    5
13    7  to the right of    4
14    7  to the right of    8
15    7   to the left of    6
16    8   to the left of    7
17    8   to the left of    6
18    8   to the left of   10
19    9               on    0
20   10               on    0
21   10  to the right of    4
22   10  to the right of    5
23   10  to the right of    8