| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at the time | 1393 |
|
| 2 | [verb] [vb pp] at the | 1211 |
|
| 3 | [vb pp] at the time | 656 |
|
| 4 | [verb] [vb pp] the time | 87 |
|
