| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [been] known for [det] | 14 |
|
| 2 | it have been known for [det] | 14 |
|
| 3 | it have be known for [det] | 14 |
|
| 4 | it has [be] known for [det] | 12 |
|
| 5 | it have [be] known for some | 9 |
|
| 6 | it have [be] known for many | 5 |
|
