| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in a [noun] [prep] | 21394 |
|
| 2 | a police [noun] [prep] | 188 |
|
| 3 | in a police [noun] | 53 |
|
| 4 | in police [noun] [prep] | 40 |
|
