| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [to-vb] a [noun] for | 15 |
|
| 2 | been [vb pp] [to-vb] a [noun] for | 15 |
|
| 3 | been [verb] [to-vb] a [noun sg] for | 15 |
|
| 4 | been [verb] to provide a [noun] for | 5 |
|
