| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun sg] [noun] at the | 687 |
|
| 2 | [prep] [noun] at the time | 592 |
|
| 3 | [prep] [noun sg] at the time | 298 |
|
| 4 | [noun sg] [noun] at the time | 292 |
|
