| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [vb pp] so often | 13 |
|
| 2 | have be [vb pp] so often | 13 |
|
| 3 | [vb -s] be [vb pp] so often | 7 |
|
| 4 | has be [vb pp] so often | 7 |
|
