| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] what [verb] to | 39 |
|
| 2 | [adv] [prep] what [vb past] to | 20 |
|
| 3 | [adv] [prep] what happened [prep] | 13 |
|
| 4 | [adv] [prep] what happen to | 13 |
|
| 5 | [adv] [prep] what happened to | 7 |
|
| 6 | [adv] [prep] [pron] happened to | 6 |
|
| 7 | [adv] [prep] [Wh det] happened to | 6 |
|
| 8 | [adv] [prep] what happened to | 6 |
|
