| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] at [det] [noun sg] | 73 |
|
| 2 | to have been [vb pp] [det] [noun sg] | 11 |
|
| 3 | to have been [vb pp] at [det] | 6 |
|
| 4 | to have [vb pp] at [det] [noun sg] | 5 |
|
