| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] [was/were] [verb] [prep] | 879 |
|
| 2 | [prep] [Wh det] [be] know [prep] | 175 |
|
| 3 | [prep] [pron] [was/were] know [prep] | 34 |
|
