| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] ' | 435 |
|
| 2 | at [art] [noun] ' | 330 |
|
| 3 | at a [noun] [unc] | 317 |
|
| 4 | at a [noun] ['s] | 292 |
|
| 5 | at a [noun] ' | 45 |
|
