| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] at [adj] time | 11 |
|
| 2 | which [verb] at [adj] time | 11 |
|
| 3 | which [verb] at [det] time | 9 |
|
| 4 | which [vb past] at [adj] time | 5 |
|
