| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] happened to be | 236 |
|
| 2 | [noun] happened to be | 92 |
|
| 3 | [noun] [pron] happened to | 62 |
|
| 4 | [noun] [pron] to be | 45 |
|
