| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [vb base] what happened to | 14 |
|
| 2 | [coord] [vb base] [Wh det] happened to | 14 |
|
| 3 | and [vb base] [Wh det] happened to | 12 |
|
| 4 | [coord] look [Wh det] happened to | 11 |
|
