| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] [verb] | 2188 |
|
| 2 | [noun prp] [verb] [Wh det] | 1154 |
|
| 3 | at [noun prp] [Wh det] | 158 |
|
| 4 | at [verb] [Wh det] | 36 |
|
