| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [adj] [noun] | 112 |
|
| 2 | have been [prep] [adj] [noun] | 91 |
|
| 3 | have been used [prep] [noun] | 69 |
|
| 4 | have been used [prep] [adj] | 35 |
|
