| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been [vb pp] | 3724 |
|
| 2 | [pron] have often [vb pp] | 159 |
|
| 3 | have often been [vb pp] | 109 |
|
| 4 | [pron] have often been | 30 |
|
