| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at a [noun] | 4020 |
|
| 2 | be [verb] a [noun] | 1838 |
|
| 3 | be [verb] at [noun] | 1504 |
|
| 4 | be [verb] at a | 571 |
|
| 5 | be at a [noun] | 87 |
|
