| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [verb] what happened to | 55 |
|
| 2 | [pron] [vb infin] what [verb] to | 19 |
|
| 3 | [pron] [vb infin] what happen to | 15 |
|
| 4 | [pron] [vb infin] what [vb past] to | 15 |
|
| 5 | [pron] [vb infin] what happened [prep] | 15 |
|
| 6 | [pron] [vb infin] [pron] happened to | 13 |
|
| 7 | [pron] [vb infin] [Wh det] happened to | 13 |
|
| 8 | [pron] [vb infin] what happened to | 12 |
|
