Are there cups?
Yes, there is a cup.
   src        edge_attr  dst
0    2   to the left of    6
1    2   to the left of    8
2    2   to the left of    4
3    4  to the right of    2
4    5  to the right of   10
5    6  to the right of    2
6    7  to the right of    8
7    8  to the right of    2
8    8   to the left of    7
9   10   to the left of    5