| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at the time | 491 |
|
| 2 | [conj] at the time | 415 |
|
| 3 | [adv] [conj] at the | 265 |
|
| 4 | [adv] [conj] the time | 103 |
|
