What are the scissors on?
The scissors are on the knife.
    src        edge_attr  dst
0     1               on    9
1     1   to the left of    9
2     2               on    9
3     2  to the right of    7
4     3  to the right of    8
5     6               on    9
6     6  to the right of    7
7     6  to the right of    8
8     7   to the left of    2
9     7   to the left of    9
10    7               on    9
11    7   to the left of    6
12    8               on    9
13    8   to the left of    3
14    8   to the left of    6
15    9  to the right of    1
16    9  to the right of    7