What are the letters on?
The letters are on the skateboard.
     src        edge_attr  dst
0      0  to the right of   12
1      0  to the right of    1
2      1      in front of   20
3      1      standing on   15
4      1       leaning on    0
..   ...              ...  ...
164   26   to the left of   19
165   26   to the left of   16
166   26   to the left of    8
167   26   to the left of   18
168   26   to the left of   17

[169 rows x 3 columns]