| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] | 33309 |
|
| 2 | it has [been] | 5229 |
|
| 3 | it has [vb pp] | 4832 |
|
| 4 | it [been] [vb pp] | 93 |
|
