| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [verb] happen [adj] [noun] | 6 |
|
| 2 | it [vb mod] [verb] happen [adj] [noun] | 6 |
|
| 3 | it [verb] [adv] happen [adj] [noun] | 9 |
|
| 4 | it [verb] not happen [adj] [noun] | 6 |
|
| 5 | it [verb] [not/n't] happen [adj] [noun] | 6 |
|
| 6 | it [verb] n't happen [adj] [noun] | 5 |
|
| 7 | it [verb] happen [prep] [adj] [noun] | 18 |
|
| 8 | it [verb] happen [prep] [adj] [noun] | 18 |
|
| 9 | it [verb] happen in [adj] [noun] | 10 |
|
| 10 | it [verb] happen in [adj] [noun] | 10 |
|
