| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] at the time | 46 |
|
| 2 | it [vb past] [adv] at the | 36 |
|
| 3 | it [vb past] at the time | 22 |
|
| 4 | it [adv] at the time | 7 |
|
