| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at the time of | 402 |
|
| 2 | [verb] [adv] at the time | 149 |
|
| 3 | [adv] at the time of | 132 |
|
| 4 | [verb] [adv] the time of | 12 |
|
