Are there either flags or skis?
Yes, there is a flag.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    1
2     1            under    9
3     1  to the right of    0
4     1            below    9
5     2   to the left of    3
6     3  to the right of    2
7     4  to the right of   10
8     4  to the right of    6
9     5   to the left of    7
10    5   to the left of    6
11    5   to the left of   10
12    6  to the right of    0
13    6  to the right of    5
14    6   to the left of    4
15    6  to the right of    8
16    6  to the right of    7
17    7   to the left of    6
18    7  to the right of    5
19    7  to the right of    8
20    8           inside    9
21    8   to the left of    6
22    8   to the left of    7
23    9            above    1
24   10   to the left of    4
25   10  to the right of    5