What is on the wall?
The letters are on the wall.
    src        edge_attr  dst
0     0  to the right of    5
1     0  to the right of    4
2     1               of   12
3     3   to the left of   10
4     3   to the left of   12
5     4   to the left of    0
6     4   to the left of   12
7     5   to the left of   12
8     5   to the left of    0
9     7               on    0
10    8   to the left of   10
11   10  to the right of    3
12   10  to the right of    8
13   11               of   12
14   12  to the right of    4
15   12  to the right of    5
16   12          wearing   10
17   12  to the right of    3