| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] what happened to [pron] | 32 |
|
| 2 | so what happen to [pron] | 9 |
|
| 3 | so what [verb] to [pron] | 9 |
|
| 4 | so what happened [prep] [pron] | 7 |
|
| 5 | so [Wh det] happened to [pron] | 7 |
|
| 6 | so [pron] happened to [pron] | 7 |
|
| 7 | so what [vb past] to [pron] | 7 |
|
| 8 | so what happened to [pron] | 7 |
|
