| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [vb pp] [prep] this [noun] | 286 |
|
| 2 | [be] [vb pp] [prep] this study | 51 |
|
| 3 | be [vb pp] [prep] this study | 51 |
|
| 4 | were [vb pp] [prep] [adj] study | 42 |
|
| 5 | [was/were] [vb pp] [prep] this study | 27 |
|
| 6 | were [verb] [prep] this study | 23 |
|
| 7 | were [vb pp] [prep] this study | 23 |
|
