| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adv] [verb] that | 1500 |
|
| 2 | [is] [adv] [vb pp] that | 1313 |
|
| 3 | [is] [adv] known [conj] | 196 |
|
| 4 | [be] [adv] known that | 193 |
|
| 5 | [is] [adv] known that | 160 |
|
| 6 | [is] [adv] know that | 157 |
|
