| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] well known that many | 5 |
|
| 2 | it [is] well known that many | 5 |
|
| 3 | it be well known that many | 5 |
|
| 4 | it is well known that many | 5 |
|
| 5 | it [be] well known that many | 5 |
|
| 6 | it [be] well known that many | 5 |
|
