Which color is that tail, orange or green?
The tail is orange.
    src        edge_attr  dst
0     1   to the left of    2
1     1   to the left of    6
2     2  to the right of    1
3     2   to the left of    5
4     2   to the left of    7
5     2   to the left of    8
6     3               of   10
7     5  to the right of    2
8     5  to the right of    7
9     5   to the left of    8
10    6   to the left of    7
11    6  to the right of    1
12    7   to the left of    5
13    7  to the right of    6
14    7   to the left of    8
15    7  to the right of    2
16    8  to the right of    5
17    8  to the right of    2
18    8  to the right of    7