| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [conj] | 2813 |
|
| 2 | is [adv] known | 1033 |
|
| 3 | [adv] known [conj] | 598 |
|
| 4 | is known [conj] | 192 |
|
