| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] [prep] the same time | 6 |
|
| 2 | which [vb past] [prep] the [det] time | 6 |
|
| 3 | which [vb past] at the [det] time | 5 |
|
| 4 | which [vb past] at the [det] time | 5 |
|
