| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] has [verb] [prep] [pron] | 45 |
|
| 2 | [det] has [vb pp] [prep] [pron] | 38 |
|
| 3 | [det] have happened [prep] [pron] | 36 |
|
| 4 | [det] [verb] happened [prep] [pron] | 36 |
|
| 5 | [adj] has happened [prep] [pron] | 25 |
|
| 6 | [det] [vb -s] happened [prep] [pron] | 23 |
|
| 7 | [det] has happen [prep] [pron] | 18 |
|
