| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | research carried out by [art] [noun] | 14 |
|
| 2 | research carry out by [art] [noun] | 14 |
|
| 3 | research carry out by the [noun] | 12 |
|
| 4 | research carry out by the [noun] | 12 |
|
| 5 | research carry out by [art] [noun sg] | 10 |
|
