| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been used for the [noun] | 8 |
|
| 2 | [vb -s] been used for the [noun] | 8 |
|
| 3 | has been used for the [noun] | 8 |
|
| 4 | [vb -s] been used for the [noun sg] | 6 |
|
