Are there any skateboards?
No, there are no skateboards.
    src        edge_attr  dst
0     0   to the left of    2
1     0   to the left of   11
2     0   to the left of    7
3     1  to the right of    2
4     2  to the right of    0
5     2  to the right of    4
6     2  to the right of   11
7     2   to the left of    1
8     2  to the right of    5
9     3  to the right of   11
10    3   to the left of    8
11    4               on    0
12    4   to the left of   11
13    4   to the left of    2
14    4   to the left of    7
15    5   to the left of    7
16    5   to the left of    2
17    5   to the left of   11
18    5   to the left of    9
19    6               on    5
20    6   to the left of   11
21    7  to the right of    4
22    7  to the right of   11
23    7  to the right of    5
24    7  to the right of    0
25    8  to the right of    3
26    9  to the right of    5
27   11  to the right of    6
28   11   to the left of    7
29   11  to the right of    4
30   11  to the right of    5
31   11  to the right of    0
32   11   to the left of    2
33   11   to the left of    3