| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] what happened to | 33 |
|
| 2 | [be] [Wh det] happened to | 33 |
|
| 3 | [be] what happened to | 33 |
|
| 4 | be [pron] happened to | 33 |
|
| 5 | [is] [pron] happened to | 28 |
|
| 6 | 's [pron] happened to | 19 |
|
| 7 | is [pron] happened to | 9 |
|
| 8 | was [pron] happened to | 5 |
|
| 9 | [was/were] [pron] happened to | 5 |
|
