| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by [art] police [noun sg] | 102 |
|
| 2 | [art] metropolitan police [noun sg] | 66 |
|
| 3 | by [art] metropolitan police | 16 |
|
| 4 | by [art] metropolitan [noun sg] | 9 |
|
