| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] at times | 15 |
|
| 2 | [vb mod] [verb] at time | 15 |
|
| 3 | [vb mod] [vb infin] at time | 15 |
|
| 4 | may [verb] at time | 7 |
|
