| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for [adj] purposes | 21 |
|
| 2 | been [vb pp] for [adj] purpose | 20 |
|
| 3 | been [vb pp] for [det] purpose | 14 |
|
| 4 | been [vb pp] for [adj] purpose | 13 |
|
| 5 | been used for [adj] purpose | 9 |
|
| 6 | been [vb pp] for this purpose | 7 |
|
| 7 | been [vb pp] for this purpose | 7 |
|
| 8 | been [vb pp] for that purpose | 6 |
|
| 9 | been [vb pp] for that purpose | 6 |
|
