| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what happened to [pers pn] [prep] the | 8 |
|
| 2 | what [vb past] to [pers pn] [prep] the | 8 |
|
| 3 | what [vb past] to [pers pn] [prep] the | 8 |
|
