Are there any fences or zebras?
Yes, there is a zebra.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of    5
2     1   to the left of    6
3     1  to the right of    7
4     2   to the left of    8
5     2   to the left of    6
6     2   to the left of    5
7     4   to the left of    5
8     5  to the right of    7
9     5  to the right of    0
10    5  to the right of    2
11    5  to the right of    4
12    5   to the left of    6
13    6  to the right of    5
14    6  to the right of    2
15    6  to the right of    1
16    7   to the left of    1
17    7   to the left of    5
18    7   to the left of    8
19    8  to the right of    7
20    8  to the right of    2
21    8  to the right of    0