Are there plates or cans that are made of metal?
No, there is a plate but it is made of wood.
   src        edge_attr  dst
0    0   to the left of    1
1    1   to the left of    5
2    1  to the right of    0
3    2  to the right of    3
4    3   to the left of    6
5    3   to the left of    2
6    5  to the right of    7
7    5  to the right of    1
8    6  to the right of    3
9    7   to the left of    5