| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [noun] at the | 789 |
|
| 2 | [noun] [noun] at the time | 407 |
|
| 3 | a [noun] at the time | 103 |
|
| 4 | a [noun] [noun] at time | 7 |
|
