| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have be [vb pp] at | 6 |
|
| 2 | we have been [vb pp] at | 6 |
|
| 3 | we have [been] [vb pp] at | 6 |
|
| 4 | we have [be] [vb pp] at | 6 |
|
