| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun] [noun sg] | 2715 |
|
| 2 | a [noun] [noun sg] [art] | 588 |
|
| 3 | at [noun] [noun sg] [art] | 133 |
|
| 4 | at a [noun] [art] | 111 |
|
| 5 | at a [noun sg] [art] | 109 |
|
