| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [been] known for some | 9 |
|
| 2 | it have [been] known for some | 9 |
|
| 3 | [pers pn] have [been] known for some | 9 |
|
| 4 | [pron] have been known for some | 9 |
|
| 5 | [pron] has [been] known for some | 7 |
|
