| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] [verb] | 8603 |
|
| 2 | it [is] [adv] [vb pp] | 5821 |
|
| 3 | [pron] [is] [adv] known | 634 |
|
| 4 | it [be] [adv] known | 565 |
|
| 5 | it [is] [adv] know | 454 |
|
