| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [verb] [prep] [Wh det] happened to | 9 |
|
| 2 | [adv] [verb] [prep] [Wh det] happened to | 9 |
|
| 3 | [adv] [verb] [Wh det] happened to [pron] | 9 |
|
| 4 | [adv] [verb] [Wh det] happened to [pers pn] | 8 |
|
