| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [pron] happened to | 5 |
|
| 2 | [was/were] what happened to | 5 |
|
| 3 | was [pron] happened to | 5 |
|
| 4 | [was/were] [Wh det] happened to | 5 |
|
| 5 | [was/were] what happened to | 5 |
|
