| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [noun] at the | 1397 |
|
| 2 | [prep] [noun] at the time | 592 |
|
| 3 | [noun] [noun] at the time | 405 |
|
| 4 | [prep] [noun] [noun] at time | 5 |
|
