| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] [noun] [conj] [verb] | 235 |
|
| 2 | at a [noun] [conj] [verb] | 203 |
|
| 3 | a [noun prp] [noun] [conj] [verb] | 168 |
|
| 4 | at a [noun prp] [noun] [verb] | 42 |
|
| 5 | at a [noun prp] [noun] [conj] | 23 |
|
