| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] happened [prep] [noun] | 343 |
|
| 2 | [Wh det] [prep] this [noun] | 156 |
|
| 3 | happened [prep] this [noun] | 22 |
|
| 4 | [Wh det] happened [prep] this | 19 |
|
| 5 | [Wh det] happened this [noun] | 16 |
|
