| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] know that | 147 |
|
| 2 | is [adv] know that [noun] | 38 |
|
| 3 | it is [adv] that [noun] | 38 |
|
| 4 | it is know that [noun] | 36 |
|
