| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [vb pp] for [adj] purposes | 28 |
|
| 2 | are used for [adj] purposes | 11 |
|
| 3 | are needed for [adj] purposes | 8 |
|
| 4 | are [vb pp] for literary purposes | 7 |
|
| 5 | are [vb pp] for literary purposes | 7 |
|
| 6 | are [vb pp] for other purposes | 5 |
|
| 7 | are [vb pp] for other purposes | 5 |
|
