| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is well known that [noun pl] [prep] | 7 |
|
| 2 | be well known that [noun pl] [prep] | 7 |
|
| 3 | [is] well known that [noun pl] [prep] | 7 |
|
| 4 | [be] well known that [noun pl] [prep] | 7 |
|
