| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [subord] it | 7100 |
|
| 2 | [vb past] [subord] it | 696 |
|
| 3 | happened [subord] [pron] | 177 |
|
| 4 | happen [subord] it | 73 |
|
| 5 | happened [conj] it | 17 |
|
