| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | use for [noun] | 1534 |
|
| 2 | use for [noun sg] | 1100 |
|
| 3 | [verb] for research | 67 |
|
| 4 | use [prep] research | 30 |
|
| 5 | use for research | 14 |
|
