| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [noun] [pron] | 113 |
|
| 2 | happen [prep] [noun] [pron] | 65 |
|
| 3 | happen [prep] be [noun] | 60 |
|
| 4 | happen [prep] be [pron] | 50 |
|
