| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [noun] | 216783 |
|
| 2 | [prep] a police [noun] | 434 |
|
| 3 | [prep] [adj] police [noun] | 252 |
|
| 4 | a [adj] police [noun] | 240 |
|
| 5 | [prep] a [adj] police | 115 |
|
