| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [art] time | 1750 |
|
| 2 | at [art] time when | 1607 |
|
| 3 | [verb] [art] time when | 194 |
|
| 4 | [verb] at time when | 16 |
|
