| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | studies carried out [prep] the | 10 |
|
| 2 | studies carried out [prep] [art] | 10 |
|
| 3 | studies carried out in [art] | 5 |
|
| 4 | studies carried out in [art] | 5 |
|
