| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] studies that have | 15 |
|
| 2 | [adj] studies that have | 9 |
|
| 3 | studies that have [verb] | 17 |
|
| 4 | studies that have [vb pp] | 17 |
|
| 5 | studies that have been | 11 |
|
| 6 | studies that have [been] | 11 |
|
| 7 | studies that have [be] | 11 |
|
| 8 | studies that have be | 11 |
|
