| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [noun] | 308 |
|
| 2 | been [prep] some [noun] | 102 |
|
| 3 | used [prep] some [noun] | 70 |
|
| 4 | been used [prep] some | 19 |
|
