| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun pl] [noun] [conj] | 7 |
|
| 2 | at a [noun pl] [noun sg] [conj] | 7 |
|
| 3 | at a [noun pl] station [conj] | 5 |
|
| 4 | at a police [noun] [conj] | 5 |
|
| 5 | at a [noun pl] station [conj] | 5 |
|
