Is the tray large or small?
The tray is small.
    src        edge_attr  dst
0     0               in    1
1     0  to the right of    5
2     1  to the right of    5
3     1  to the right of    7
4     2  to the right of   10
5     2  to the right of    6
6     2  to the right of    3
7     3   to the left of    2
8     5   to the left of    0
9     5   to the left of    1
10    6  to the right of   10
11    6   to the left of    2
12    7   to the left of    1
13    9  to the right of   10
14   10               on    8
15   10   to the left of    2
16   10   to the left of    9
17   10   to the left of    6