Is that a polar bear or a penguin?
That is a polar bear.
    src        edge_attr  dst
0     3   to the left of    9
1     3   to the left of    7
2     4  to the right of   17
3     5  to the right of   17
4     5   to the left of   11
5     7   to the left of    9
6     7  to the right of    3
7     8   to the left of   10
8     9  to the right of    3
9     9  to the right of    7
10    9   to the left of   10
11   10  to the right of    8
12   10  to the right of    9
13   11  to the right of   17
14   11  to the right of    5
15   17   to the left of    4
16   17   to the left of    5
17   17   to the left of   11