| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] [vb past] | 152755 |
|
| 2 | [pron] [vb past] happen | 1475 |
|
| 3 | [subord] [pron] happen | 1283 |
|
| 4 | [subord] [vb past] happen | 30 |
|
