| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [verb] [prep] | 25723 |
|
| 2 | [Wh det] [vb past] [prep] | 10934 |
|
| 3 | [Wh det] happen [prep] | 2328 |
|
| 4 | [pron] happened [prep] | 1950 |
|
| 5 | [Wh det] happened [prep] | 1416 |
|
