| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have happened over the | 6 |
|
| 2 | what have happened over the | 6 |
|
| 3 | what have happened over the | 6 |
|
| 4 | [Wh det] have happened over the | 6 |
|
| 5 | have happened over the [adj] | 9 |
|
| 6 | have happened over the last | 6 |
|
| 7 | have happened over the last | 6 |
|
| 8 | have happened over the [num ord] | 6 |
|
