| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been used [prep] this [noun] | 9 |
|
| 2 | have been used [prep] this [noun] | 9 |
|
| 3 | have been used [prep] this [noun] | 5 |
|
| 4 | [vb base] been used [prep] this [noun] | 5 |
|
