| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [pron] happened to [be] | 11 |
|
| 2 | [Wh adv] [pron] happened to be | 11 |
|
| 3 | [Wh adv] [pron] happened to be | 11 |
|
| 4 | [Wh adv] [pron] happened to [be] | 11 |
|
