| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [prep] [art] police | 412 |
|
| 2 | [be] [vb pp] [prep] [art] force | 30 |
|
| 3 | [vb pp] [prep] [art] police force | 12 |
|
| 4 | [be] [prep] [art] police force | 5 |
|
