| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] [vb infin] [prep] [det] time | 7 |
|
| 2 | which [vb mod] [verb] [prep] [det] time | 7 |
|
| 3 | which [vb mod] [verb] at [det] time | 5 |
|
