| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] used for [noun] | 153 |
|
| 2 | used for this [noun] | 93 |
|
| 3 | [was/were] for this [noun] | 38 |
|
| 4 | [was/were] used for this | 14 |
|
