| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it happen [adj] [noun] | 36 |
|
| 2 | it [vb mod] [adj] [noun] | 34 |
|
| 3 | [vb mod] happen [adj] [noun] | 21 |
|
| 4 | it [vb mod] happen [adj] | 14 |
|
