How big are the eyes?
The eyes are large.
    src        edge_attr  dst
0     2  to the right of    6
1     2   to the left of    4
2     2   to the left of    3
3     2   to the left of    7
4     3  to the right of    2
5     3  to the right of    6
6     4  to the right of    2
7     4               on    0
8     6   to the left of    7
9     6   to the left of    3
10    6   to the left of    2
11    7  to the right of    6
12    7  to the right of    2