What article of clothing is not blue?
The clothing item is a sock.
    src        edge_attr  dst
0     0   to the left of    8
1     0   to the left of   13
2     1   to the left of   13
3     1   to the left of    9
4     1   to the left of    3
5     3  to the right of    5
6     3  to the right of    1
7     3  to the right of   16
8     3  to the right of   11
9     5   to the left of   15
10    5   to the left of    3
11    6   to the left of    8
12    6   to the left of   13
13    8  to the right of    0
14    8  to the right of    6
15    9  to the right of    1
16    9   to the left of   13
17   11   to the left of    3
18   11   to the left of   15
19   13  to the right of    0
20   13  to the right of    1
21   13  to the right of    6
22   13  to the right of    9
23   15  to the right of   11
24   15  to the right of   16
25   15  to the right of    5
26   16   to the left of   15
27   16   to the left of    3