| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] [prep] be | 838 |
|
| 2 | [pron] happen [prep] be | 565 |
|
| 3 | [Wh pn] happen [prep] be | 118 |
|
| 4 | who happen [prep] [be] | 111 |
|
| 5 | who happen [prep] be | 111 |
|
