| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [art] [noun pl] officer who | 8 |
|
| 2 | by [art] [noun pl] officer [Wh pn] | 8 |
|
| 3 | by [art] police officer [Wh pn] | 6 |
|
| 4 | by a [noun pl] officer [Wh pn] | 5 |
|
