| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [verb] [conj] | 1225 |
|
| 2 | [conj] it [is] [vb pp] [conj] | 1141 |
|
| 3 | [conj] it [be] known [conj] | 89 |
|
| 4 | [conj] [pron] [is] known [conj] | 65 |
|
| 5 | [conj] it [is] know [conj] | 65 |
|
