Do you see either any helmet or fence?
No, there are no helmets or fences.
    src        edge_attr  dst
0     1   to the left of    7
1     1   to the left of    8
2     2   to the left of    8
3     2   to the left of   10
4     3   to the left of   10
5     3   to the left of    8
6     6   to the left of    8
7     6   to the left of    7
8     7  to the right of    6
9     7  to the right of    1
10    8  to the right of    1
11    8  to the right of    2
12    8  to the right of    3
13    8  to the right of    6
14    8  to the right of   10
15   10  to the right of    3
16   10  to the right of    2
17   10   to the left of    8