| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [adj] [noun] | 112 |
|
| 2 | [vb base] been [prep] [adj] [noun] | 110 |
|
| 3 | [vb base] been used [prep] [noun] | 70 |
|
| 4 | [vb base] been used [prep] [adj] | 38 |
|
