Which place is it?
It is a shore.
    src        edge_attr  dst
0     0  to the right of    7
1     0   to the left of    5
2     0  to the right of    1
3     0   to the left of    3
4     1   to the left of    2
5     1   to the left of    0
6     1   to the left of    5
7     2  to the right of    1
8     2  to the right of    9
9     2  to the right of    7
10    3  to the right of    8
11    3  to the right of    0
12    3  to the right of    5
13    5   to the left of    3
14    5  to the right of    0
15    5  to the right of    1
16    7   to the left of    0
17    7   to the left of    2
18    8   to the left of    3
19    9   to the left of    2