| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [verb] to be [art] | 601 |
|
| 2 | it [vb past] to be [art] | 217 |
|
| 3 | [pron] happened to be [art] | 33 |
|
| 4 | it happen to be [art] | 19 |
|
| 5 | it happened to [be] [art] | 8 |
|
| 6 | it happened [prep] be [art] | 8 |
|
