In which part of the picture are the knives?
The knives are on the left of the image.
    src        edge_attr  dst
0     0  to the right of    8
1     0  to the right of    3
2     0   to the left of    9
3     0  to the right of    7
4     0   to the left of   10
5     1  to the right of    3
6     1  to the right of    8
7     3   to the left of   11
8     3   to the left of    1
9     3   to the left of    7
10    3   to the left of    0
11    3   to the left of    8
12    3               on    2
13    3  to the right of    5
14    3  to the right of    6
15    5   to the left of    3
16    6   to the left of    3
17    6   to the left of    8
18    7   to the left of   11
19    7               on    2
20    7  to the right of    3
21    7   to the left of    0
22    7   to the left of    9
23    8   to the left of    0
24    8  to the right of    3
25    8   to the left of    1
26    8             near    9
27    8   to the left of   11
28    8  to the right of    6
29    9  to the right of    7
30    9  to the right of    0
31    9             near    8
32    9  to the right of   11
33   10  to the right of   11
34   10  to the right of    0
35   11  to the right of    3
36   11  to the right of    7
37   11   to the left of   10
38   11   to the left of    9
39   11  to the right of    8