Are the stones small?
No, the stones are large.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    3
2     0  to the right of    2
3     0   to the left of    6
4     0   to the left of    8
..  ...              ...  ...
63   12   to the left of    2
64   12   to the left of    9
65   12   to the left of    6
66   13   to the left of    6
67   13   to the left of    8

[68 rows x 3 columns]