Where in the image is the tap, in the bottom or in the top?
The tap is in the bottom of the image.
   src        edge_attr  dst
0    1             near    4
1    2  to the right of    5
2    4             near    1
3    4             near    8
4    5   to the left of    2
5    8     reflected in   10
6    8             near    4
7    9               in    0
8    9               on    1
9   10               on    1