The couple is cutting what?
The couple is cutting the cake.
   src        edge_attr  dst
0    0  to the right of    5
1    2          cutting    1
2    2  to the right of    3
3    3   to the left of    2
4    3   to the left of    5
5    4  to the right of    5
6    5   to the left of    4
7    5  to the right of    3
8    5   to the left of    0