| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been used for [noun] | 22 |
|
| 2 | have [been] used for [noun] | 22 |
|
| 3 | [vb base] [been] used for [noun pl] | 12 |
|
| 4 | [vb base] [been] used for [noun sg] | 9 |
|
