Are there any skis?
No, there are no skis.
    src        edge_attr  dst
0     2  to the right of   16
1     2  to the right of    3
2     3   to the left of   10
3     3   to the left of   14
4     3   to the left of    2
5     4   to the left of    8
6     5   to the left of   14
7     7   to the left of   15
8     7   to the left of    8
9     8   to the left of   15
10    8  to the right of    4
11    8  to the right of    7
12    8  to the right of    9
13    9   to the left of    8
14   10  to the right of   13
15   10  to the right of   16
16   10  to the right of    3
17   13   to the left of   10
18   14  to the right of    5
19   14  to the right of    3
20   15  to the right of    7
21   15  to the right of    8
22   16   to the left of    2
23   16               of    9
24   16   to the left of   10