| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [Wh det] it was [verb] that | 10 |
|
| 2 | at [Wh det] it was [vb pp] that | 10 |
|
| 3 | at which it was [verb] that | 10 |
|
| 4 | at [Wh det] it was [verb] that | 10 |
|
