Which place is it?
It is a field.
    src        edge_attr  dst
0     0   to the left of    2
1     1  to the right of   12
2     1   to the left of    2
3     2  to the right of   11
4     2  to the right of    3
5     2  to the right of   12
6     2  to the right of    7
7     2  to the right of    9
8     2  to the right of    0
9     2  to the right of    1
10    3   to the left of    2
11    7   to the left of    2
12    9   to the left of    2
13   11   to the left of    2
14   12   to the left of    1
15   12   to the left of    2