| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [be] [pron] happened [prep] | 54 |
|
| 2 | [det] [was/were] [pron] [verb] [prep] | 36 |
|
| 3 | [det] [was/were] [pron] [vb past] [prep] | 11 |
|
| 4 | [det] [was/were] [pron] happen [prep] | 8 |
|
| 5 | [adj] [was/were] [pron] happened [prep] | 8 |
|
