| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it is [verb] | 607 |
|
| 2 | when it is [vb pp] | 553 |
|
| 3 | [conj] it is known | 147 |
|
| 4 | [subord] it is known | 110 |
|
| 5 | when it be known | 12 |
|
| 6 | when it [be] known | 12 |
|
| 7 | when it [is] known | 8 |
|
| 8 | when [pers pn] is known | 8 |
|
| 9 | when [pron] is known | 8 |
|
| 10 | when it is known | 7 |
|
| 11 | when it is known | 7 |
|
| 12 | when it is know | 7 |
|
