| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have [adv] been [vb pp] | 594 |
|
| 2 | they have [adv] been [vb pp] | 369 |
|
| 3 | [pron] have often been [vb pp] | 114 |
|
| 4 | they [verb] often been [vb pp] | 10 |
|
| 5 | they have often [be] [vb pp] | 10 |
|
| 6 | they have often been [vb pp] | 10 |
|
| 7 | they have often [been] [vb pp] | 10 |
|
| 8 | they have often be [vb pp] | 10 |
|
| 9 | they have often been [verb] | 10 |
|
