| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] at the | 1198 |
|
| 2 | [vb past] at the time | 331 |
|
| 3 | [adv] at the time | 323 |
|
| 4 | [vb past] [adv] the time | 16 |
|
