| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pos pn] research for this [noun] | 5 |
|
| 2 | [pron] research for this [noun] | 5 |
|
| 3 | research for this [noun] [pers pn] | 5 |
|
| 4 | research for this [noun] [pron] | 5 |
|
