| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] that has been [verb] [prep] | 410 |
|
| 2 | [noun sg] that has been [verb] [prep] | 380 |
|
| 3 | research that have been [verb] [prep] | 7 |
|
| 4 | research that [vb -s] been [verb] [prep] | 7 |
|
| 5 | research that [verb] been [verb] [prep] | 7 |
|
| 6 | research that has [be] [verb] [prep] | 6 |
|
| 7 | research that has been [verb] [prep] | 6 |
|
| 8 | research [conj] has been [verb] [prep] | 6 |
|
| 9 | research that has been [verb] [prep] | 6 |
|
| 10 | research that has [been] [verb] [prep] | 6 |
|
| 11 | research that has be [verb] [prep] | 6 |
|
