| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [verb] to [be] | 1627 |
|
| 2 | it be [vb pp] to [be] | 689 |
|
| 3 | [pron] be known to [be] | 105 |
|
| 4 | it [be] known to [be] | 10 |
|
| 5 | it be known to [be] | 10 |
|
| 6 | it be know to [be] | 10 |
|
| 7 | it be known [prep] [be] | 10 |
|
