| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [adv] at the time | 46 |
|
| 2 | [vb past] at the time [verb] | 17 |
|
| 3 | [adv] at the time [verb] | 13 |
|
| 4 | [vb past] [adv] the time [verb] | 5 |
|
