| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | study carry out [prep] the [noun] | 15 |
|
| 2 | study carried out [prep] the [noun] | 14 |
|
| 3 | study carry out [prep] the [noun sg] | 10 |
|
| 4 | study carry out by the [noun] | 5 |
|
