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