| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been used [prep] [noun sg] [noun] | 14 |
|
| 2 | [vb base] been used [prep] [noun sg] [noun sg] | 8 |
|
| 3 | [vb base] been used in [noun sg] [noun] | 6 |
|
| 4 | [vb base] been used [prep] [noun sg] [noun pl] | 6 |
|
