| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was used for [adj] [noun] | 46 |
|
| 2 | [was/were] used for [adj] [noun sg] | 35 |
|
| 3 | [was/were] used for [adj] [noun pl] | 31 |
|
| 4 | were used for [adj] [noun] | 22 |
|
| 5 | [was/were] used for [adj] purpose | 8 |
|
| 6 | [was/were] used for [adj] purposes | 8 |
|
| 7 | [was/were] used for statistical [noun] | 5 |
|
