| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [verb] for [adj] purpose | 21 |
|
| 2 | [was/were] [vb pp] for [adj] purpose | 21 |
|
| 3 | [was/were] [verb] for [det] purpose | 18 |
|
| 4 | [was/were] [verb] for this purpose | 16 |
|
| 5 | [was/were] [verb] for this purpose | 16 |
|
| 6 | was [verb] for [adj] purpose | 13 |
|
| 7 | [was/were] used for [adj] purpose | 9 |
|
| 8 | [was/were] use for [adj] purpose | 9 |
|
| 9 | were [verb] for [adj] purpose | 8 |
|
