| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [verb] to happen | 5 |
|
| 2 | it be [verb] to happen | 60 |
|
| 3 | it [be] [verb] to happen | 60 |
|
| 4 | it [is] [verb] to happen | 41 |
|
| 5 | it 's [verb] to happen | 30 |
|
| 6 | it was [verb] to happen | 19 |
|
| 7 | it [was/were] [verb] to happen | 19 |
|
| 8 | it is [verb] to happen | 11 |
|
| 9 | it [modal v] [verb] to happen | 8 |
|
| 10 | it [vb mod] [verb] to happen | 8 |
|
| 11 | it all [verb] to happen | 5 |
|
| 12 | it [adj] [verb] to happen | 5 |
|
| 13 | it [det] [verb] to happen | 5 |
|
| 14 | it all [verb] to happen | 5 |
|
| 15 | it [verb] to happen [adv] | 6 |
|
| 16 | it [verb] to happen [adv] | 6 |
|
| 17 | it [verb] to happen [prep] | 5 |
|
| 18 | it [verb] to happen [prep] | 5 |
|
