| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] for this [noun sg] | 14 |
|
| 2 | has been [vb pp] for this [noun sg] | 10 |
|
| 3 | have been [vb pp] for this purpose | 7 |
|
| 4 | had been [vb pp] for this [noun sg] | 7 |
|
| 5 | have been used for this [noun sg] | 5 |
|
