What color is the tray?
The tray is light brown.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    8
2     0   to the left of    9
3     1   to the left of    7
4     1   to the left of    3
5     1   to the left of    4
6     3  to the right of    1
7     3  to the right of    8
8     3  to the right of    5
9     3  to the right of    9
10    4               of    3
11    4  to the right of    1
12    5   to the left of    3
13    5               on    1
14    7  to the right of    1
15    7  to the right of   10
16    8  to the right of    0
17    8   to the left of    3
18    9   to the left of    3
19    9  to the right of    0
20   10   to the left of    7
21   11  to the right of    0
22   11               in    1