| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] | 200716 |
|
| 2 | is [vb pp] | 136581 |
|
| 3 | [be] known | 6791 |
|
| 4 | be known | 6791 |
|
| 5 | is know | 2809 |
|
| 6 | [is] known | 2729 |
|
