| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has happened [prep] [pron] | 140 |
|
| 2 | [det] has happened [prep] | 64 |
|
| 3 | [det] has happened [pron] | 6 |
|
| 4 | [det] has [prep] [pron] | 5 |
|
