| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the [noun] [prep] a [noun] | 1750 |
|
| 2 | [prep] the [noun prp] [prep] a [noun] | 355 |
|
| 3 | at the [noun prp] [prep] [art] [noun] | 30 |
|
| 4 | at [art] [noun prp] [prep] a [noun] | 10 |
|
