What are the pieces of furniture in the kitchen that is not dirty?
The pieces of furniture are drawers.
    src        edge_attr  dst
0     1   to the left of    8
1     1   to the left of    2
2     1   to the left of   13
3     1   to the left of   10
4     1   to the left of    9
5     1   to the left of    3
6     2  to the right of    1
7     3  to the right of    1
8     4            above    6
9     5               on   12
10    5            above    6
11    6               on    9
12    6  to the right of   10
13    6            below    4
14    6            below    5
15    7   to the left of    8
16    8               on    9
17    8               on    2
18    8  to the right of    1
19    8  to the right of    7
20    8   to the left of   13
21    8               in   11
22    9  to the right of    1
23   10   to the left of    6
24   10               in   11
25   10  to the right of    1
26   13  to the right of    8
27   13  to the right of    1