| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this has been [vb pp] | 562 |
|
| 2 | [vb base] has been [vb pp] | 50 |
|
| 3 | [vb base] this has been | 18 |
|
| 4 | [vb base] this has [vb pp] | 9 |
|
