| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [noun] | 308 |
|
| 2 | only been [prep] [noun] | 46 |
|
| 3 | only used [prep] [noun] | 18 |
|
| 4 | only been used [prep] | 10 |
|
