| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | out research [prep] | 56 |
|
| 2 | out research into | 16 |
|
| 3 | out research on | 13 |
|
| 4 | out research in | 12 |
|
| 5 | out research for | 5 |
|
