Does that field look brown?
Yes, the field is brown.
    src        edge_attr  dst
0     0               on    2
1     0  to the right of    1
2     1  to the right of    4
3     1  to the right of    3
4     1  to the right of    9
5     1  to the right of    8
6     1   to the left of    0
7     3   to the left of    1
8     4   to the left of    1
9     8   to the left of    1
10    9   to the left of    1