| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] exactly [Wh det] happened to | 6 |
|
| 2 | be exactly [Wh det] happened to | 6 |
|
| 3 | [is] exactly [Wh det] happened to | 5 |
|
| 4 | exactly [Wh det] happened to [pron] | 7 |
|
