| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] might have happened to | 12 |
|
| 2 | [Wh det] might have happened to | 7 |
|
| 3 | what might have happened to | 6 |
|
| 4 | what might have happened to | 6 |
|
| 5 | might have happened to [pron] | 12 |
|
| 6 | might have happened to [pers pn] | 9 |
|
