What length is that sea shore?
The sea shore is short.
    src        edge_attr  dst
0     2             near   11
1     3   to the left of   10
2     4   to the left of   10
3     5  to the right of    9
4     6  to the right of    8
5     6  to the right of   11
6     8   to the left of    6
7     9   to the left of    5
8    10               on    2
9    10  to the right of    3
10   10  to the right of    4
11   11             near    2
12   11   to the left of    6