Is the headboard rectangular and small?
No, the headboard is rectangular but large.
     src        edge_attr  dst
0      0  to the right of    9
1      0  to the right of   10
2      0  to the right of   16
3      0  to the right of    4
4      0  to the right of    3
..   ...              ...  ...
124   22  to the right of   12
125   22  to the right of    3
126   22          next to   15
127   22  to the right of    5
128   22  to the right of   21

[129 rows x 3 columns]