| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [prep] [det] [noun] | 800 |
|
| 2 | [Wh det] happened [prep] [noun] | 343 |
|
| 3 | [Wh det] happened [prep] [det] | 107 |
|
| 4 | happened [prep] [det] [noun] | 73 |
|
| 5 | [Wh det] happened [det] [noun] | 43 |
|
