| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [prep] [art] time | 15 |
|
| 2 | which [vb past] [prep] [art] time | 15 |
|
| 3 | which [vb past] at [art] time | 10 |
|
| 4 | which [vb past] at [art] time | 10 |
|
| 5 | which [vb past] [art] [adj] time | 8 |
|
