| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] for research | 67 |
|
| 2 | [vb pp] for research | 34 |
|
| 3 | used for research | 14 |
|
| 4 | use for research | 14 |
|
| 5 | [vb base] for research | 11 |
|
| 6 | [v-ing] for research | 11 |
|
| 7 | [to-vb] for research | 6 |
|
| 8 | pay for research | 6 |
|
| 9 | need for research | 5 |
|
