| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] at the | 467 |
|
| 2 | [adv] at the time | 323 |
|
| 3 | [v-ing] at the time | 190 |
|
| 4 | [adv] [v-ing] the time | 21 |
|
