| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] known that [det] | 16 |
|
| 2 | is well known that [det] | 11 |
|
| 3 | is well known that [det] | 11 |
|
| 4 | is [adv] known that many | 6 |
|
