| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [adv] [been] [vb pp] | 7267 |
|
| 2 | has [adv] [been] [vb pp] | 5686 |
|
| 3 | [verb] often [been] [vb pp] | 360 |
|
| 4 | have often [been] [vb pp] | 360 |
|
| 5 | [vb -s] often [been] [vb pp] | 224 |
|
| 6 | has often [been] [verb] | 221 |
|
| 7 | has often [been] [vb pp] | 220 |
|
| 8 | has often [be] [vb pp] | 220 |
|
