| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] to be | 3714 |
|
| 2 | it [vb past] to be | 1130 |
|
| 3 | [pron] happened to be | 236 |
|
| 4 | it happen to be | 77 |
|
| 5 | it happened to [be] | 28 |
|
| 6 | it happened [prep] be | 28 |
|
