On which side of the photo is the tray?
The tray is on the left of the image.
    src        edge_attr  dst
0     1  to the right of   13
1     1  to the right of    9
2     1  to the right of   16
3     2  to the right of    6
4     3  to the right of    9
5     3  to the right of   14
6     3  to the right of   13
7     3  to the right of   16
8     4               on    9
9     4               on   16
10    5  to the right of   13
11    5   to the left of   12
12    5  to the right of   16
13    5  to the right of    9
14    6   to the left of    2
15    7  to the right of   10
16    8  to the right of   12
17    9   to the left of   14
18    9   to the left of   15
19    9   to the left of    3
20    9   to the left of    1
21    9   to the left of   10
22    9   to the left of    5
23   10   to the left of    7
24   10  to the right of    9
25   10  to the right of   13
26   10  to the right of   14
27   10  to the right of   16
28   12  to the right of    5
29   12   to the left of    8
30   13   to the left of   10
31   13   to the left of    5
32   13   to the left of    3
33   13   to the left of    1
34   13   to the left of   15
35   13   to the left of   14
36   14  to the right of   16
37   14   to the left of   10
38   14               on   13
39   14  to the right of    9
40   14  to the right of   13
41   14   to the left of    3
42   15  to the right of   13
43   15  to the right of   16
44   15  to the right of    9
45   16   to the left of    5
46   16   to the left of   10
47   16   to the left of    1
48   16   to the left of    3
49   16   to the left of   14
50   16   to the left of   15