| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] is [prep] [noun] | 3177 |
|
| 2 | [pron] happen [prep] [noun] | 666 |
|
| 3 | [pron] is happen [prep] | 339 |
|
| 4 | is happen [prep] [noun] | 91 |
|
