| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have happened [prep] | 1620 |
|
| 2 | have happened [prep] | 1620 |
|
| 3 | have [verb] over | 1419 |
|
| 4 | have [vb pp] over | 1337 |
|
| 5 | [verb] happened over | 16 |
|
| 6 | have happen over | 15 |
|
| 7 | have happened over | 15 |
|
