| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] what [verb] to | 133 |
|
| 2 | [coord] [pron] happened to | 61 |
|
| 3 | [coord] what happen to | 60 |
|
| 4 | [coord] what [vb past] to | 54 |
|
| 5 | [coord] what happened [prep] | 53 |
|
| 6 | [coord] what happened [prep] | 53 |
|
| 7 | [conj] what happened to | 41 |
|
| 8 | [coord] [Wh det] happened to | 37 |
|
| 9 | [coord] what happened to | 34 |
|
| 10 | [coord] what happened to | 34 |
|
