| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [adv] [been] [verb] | 7566 |
|
| 2 | has [adv] [been] [verb] | 5903 |
|
| 3 | have often [been] [verb] | 363 |
|
| 4 | [verb] often [been] [verb] | 363 |
|
| 5 | [vb -s] often [been] [verb] | 225 |
|
| 6 | has often [be] [verb] | 221 |
|
| 7 | has often [been] [verb] | 221 |
|
