| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] | 33309 |
|
| 2 | [vb base] been [vb pp] | 23084 |
|
| 3 | [vb base] has [vb pp] | 113 |
|
| 4 | [vb base] has been | 93 |
|
