| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] | 23915 |
|
| 2 | [vb pp] it [prep] | 3342 |
|
| 3 | [vb pp] it be | 1192 |
|
| 4 | [vb pp] be [prep] | 715 |
|
