| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] at the time | 173 |
|
| 2 | [verb] [pron] at the time | 133 |
|
| 3 | [prep] [verb] [pron] at the | 60 |
|
| 4 | [prep] [verb] at the time | 19 |
|
