| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] for three | 36 |
|
| 2 | have been [vb pp] for year | 28 |
|
| 3 | been [vb pp] for three year | 16 |
|
| 4 | have [vb pp] for three year | 15 |
|
