| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have happened in [noun] | 88 |
|
| 2 | have in a [noun] | 44 |
|
| 3 | have happened in a | 15 |
|
| 4 | happened in a [noun] | 10 |
|
| 5 | have happened a [noun] | 5 |
|
