| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [pron] at [art] time | 6 |
|
| 2 | [prep] [verb] [pron] at [art] time | 6 |
|
| 3 | [prep] [verb] [pron] at the time | 5 |
|
| 4 | [prep] [verb] [pron] at the time | 5 |
|
| 5 | [prep] [verb] [pers pn] at [art] time | 5 |
|
