| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [vb pp] at some time | 10 |
|
| 2 | have been [vb pp] at some time | 10 |
|
| 3 | have be [vb pp] at some time | 9 |
|
| 4 | had be [vb pp] at some time | 5 |
|
