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