Which pieces of clothing are stained?
The clothing items are pants.
    src        edge_attr  dst
0     0               on   16
1     0          wearing    1
2     0   to the left of   12
3     0   to the left of   18
4     0   to the left of    8
5     0   to the left of    7
6     0   to the left of   15
7     0   to the left of    9
8     0          wearing   14
9     1   to the left of    8
10    1   to the left of    7
11    1   to the left of   15
12    1  to the right of   14
13    1   to the left of   18
14    2   to the left of    7
15    2   to the left of   18
16    3   to the left of    7
17    3   to the left of   18
18    3   to the left of   15
19    4  to the right of   17
20    5  to the right of   17
21    6  to the right of   17
22    7   to the left of   12
23    7  to the right of    0
24    7  to the right of    2
25    7   to the left of    8
26    7  to the right of    1
27    7  to the right of   14
28    7  to the right of    3
29    8  to the right of    1
30    8  to the right of    0
31    8  to the right of    7
32    9  to the right of    0
33   12  to the right of    0
34   12  to the right of    7
35   14   to the left of   18
36   14   to the left of    1
37   14   to the left of    7
38   14   to the left of   15
39   15  to the right of    0
40   15  to the right of    1
41   15  to the right of   14
42   15  to the right of    3
43   17   to the left of    5
44   17   to the left of    6
45   17   to the left of    4
46   18          wearing    4
47   18               on   16
48   18  to the right of    3
49   18  to the right of   14
50   18          holding   12
51   18          wearing   19
52   18  to the right of    1
53   18  to the right of    0
54   18  to the right of    2
55   18          wearing   17