| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [pron] [noun] [pron] | 418 |
|
| 2 | at [pron] [noun sg] [pron] | 363 |
|
| 3 | [prep] [pron] time [pron] | 305 |
|
| 4 | at [pron] time [pron] | 29 |
|
