| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] research into the | 109 |
|
| 2 | [prep] [adj] research into | 79 |
|
| 3 | [prep] [adj] into the | 63 |
|
| 4 | [prep] research into the | 49 |
|
| 5 | [prep] [adj] research the | 11 |
|
