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