| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | were [vb pp] for this [noun sg] | 26 |
|
| 2 | were [vb pp] for this purpose | 5 |
|
| 3 | were [vb pp] for this purpose | 5 |
|
| 4 | were used for this [noun] | 5 |
|
