| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] research [verb] been do [prep] | 16 |
|
| 2 | [det] research [verb] been do [prep] | 10 |
|
| 3 | little research [verb] been do [prep] | 8 |
|
| 4 | little research [verb] been do [prep] | 8 |
|
| 5 | [adj] research [verb] been do [prep] | 6 |
|
| 6 | research [verb] been do [prep] [art] | 10 |
|
| 7 | research [verb] been do [prep] the | 10 |
|
| 8 | research [verb] been do [prep] the | 10 |
|
| 9 | research [verb] been do [prep] [art] | 10 |
|
