| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] at this [noun] | 8 |
|
| 2 | have [been] at this [noun] | 8 |
|
| 3 | [been] [verb] at this [noun] | 20 |
|
| 4 | [been] [vb pp] at this [noun] | 16 |
|
