| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been used [prep] some [noun] | 6 |
|
| 2 | [vb -s] been used [prep] some [noun] | 6 |
|
| 3 | has been used [prep] some [noun] | 6 |
|
| 4 | [vb -s] been used in some [noun] | 5 |
|
| 5 | [vb -s] been used in some [noun] | 5 |
|
