| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] happened to | 92 |
|
| 2 | [prep] [Wh det] happened to | 88 |
|
| 3 | [prep] what happened to | 85 |
|
| 4 | [prep] what happened to | 85 |
|
| 5 | about [pron] happened to | 24 |
|
| 6 | of [pron] happened to | 22 |
|
| 7 | on [pron] happened to | 11 |
|
| 8 | for [pron] happened to | 8 |
|
| 9 | after [pron] happened to | 5 |
|
| 10 | to [pron] happened to | 5 |
|
