| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what [pron] | 12907 |
|
| 2 | [prep] what [pers pn] | 12224 |
|
| 3 | [prep] [pron] they | 8569 |
|
| 4 | [prep] what they | 2328 |
|
