| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of research have be | 15 |
|
| 2 | [noun sg] of research have be | 12 |
|
| 3 | of [adj] research have be | 6 |
|
| 4 | of research [noun] have be | 5 |
|
| 5 | of research have be [verb] | 12 |
|
| 6 | of research have be [vb pp] | 12 |
|
