| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [adj] [noun] | 200 |
|
| 2 | been used [prep] [adj] [noun pl] | 126 |
|
| 3 | been [verb] [prep] [adj] studies | 55 |
|
| 4 | been [vb pp] [prep] [adj] studies | 55 |
|
| 5 | [be] used [prep] [adj] studies | 9 |
|
| 6 | be used [prep] [adj] studies | 9 |
|
| 7 | been used [prep] [adj] studies | 6 |
|
| 8 | been used [prep] [adj] study | 6 |
|
| 9 | been use [prep] [adj] studies | 6 |
|
| 10 | [been] used [prep] [adj] studies | 6 |
|
