| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [verb] | 51076 |
|
| 2 | it be [vb pp] | 37805 |
|
| 3 | [pron] be known | 1884 |
|
| 4 | it be know | 682 |
|
| 5 | it [be] known | 651 |
|
