| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to a study [prep] the | 22 |
|
| 2 | to a study [prep] the | 22 |
|
| 3 | to a study by the | 10 |
|
| 4 | to a study by the | 10 |
|
| 5 | to a study of the | 8 |
|
| 6 | to a study of the | 8 |
|
