| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [verb] [conj] | 4469 |
|
| 2 | it is [vb pp] [conj] | 4275 |
|
| 3 | it be known [conj] | 274 |
|
| 4 | it [be] known [conj] | 274 |
|
| 5 | [pron] is known [conj] | 161 |
|
| 6 | it [is] known [conj] | 158 |
|
| 7 | it is know [conj] | 155 |
|
