| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | studies which [vb base] [verb] [art] [noun] | 7 |
|
| 2 | studies which [vb base] [verb] [art] [noun] | 7 |
|
| 3 | studies which [vb base] [verb] the [noun] | 6 |
|
| 4 | studies which [vb base] [verb] the [noun] | 6 |
|
