| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] a [noun] | 157 |
|
| 2 | has been [vb pp] at [noun] | 139 |
|
| 3 | been [vb pp] at a [noun] | 66 |
|
| 4 | has been [vb pp] at a | 31 |
|
| 5 | has [vb pp] at a [noun] | 17 |
|
