| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used [prep] [noun sg] [noun sg] | 24 |
|
| 2 | been used in [noun] [noun sg] | 13 |
|
| 3 | been used for [noun] [noun sg] | 12 |
|
| 4 | been used [prep] [noun prp] [noun sg] | 6 |
|
