| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [is] [verb] | 869 |
|
| 2 | [vb pp] [is] [vb pp] | 598 |
|
| 3 | [verb] [is] known | 36 |
|
| 4 | [vb pp] [be] known | 33 |
|
| 5 | [vb pp] [is] know | 18 |
|
