| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] at [det] [noun sg] | 17 |
|
| 2 | has been [vb pp] at some [noun] | 10 |
|
| 3 | has been [vb pp] at [det] [noun pl] | 7 |
|
| 4 | has been [vb pp] at [det] time | 5 |
|
