| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [pron] happened to [pers pn] | 11 |
|
| 2 | [to-vb] what happened to [pers pn] | 11 |
|
| 3 | [to-vb] [Wh det] happened to [pers pn] | 11 |
|
| 4 | [to-vb] what happened to [pers pn] | 11 |
|
