| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] in [noun] drugs | 6 |
|
| 2 | [noun sg] in [noun] drugs | 6 |
|
| 3 | in [noun] [prep] drugs | 11 |
|
| 4 | in [noun] [prep] drugs | 11 |
|
