| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [been] [vb pp] at [det] | 6 |
|
| 2 | [to-vb] been [verb] at [det] | 6 |
|
| 3 | to have [been] [verb] at [det] | 6 |
|
| 4 | [to-vb] [been] [verb] at [det] | 6 |
|
