| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this has been [vb pp] | 562 |
|
| 2 | has been [vb pp] [det] | 219 |
|
| 3 | this has [vb pp] [det] | 46 |
|
| 4 | this has been [det] | 6 |
|
