| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [verb] been known for some | 9 |
|
| 2 | it [verb] been known for some | 9 |
|
| 3 | [pron] have been known for some | 9 |
|
| 4 | it [verb] been known for some | 9 |
|
| 5 | [pron] [vb -s] been known for some | 8 |
|
| 6 | [pron] has been known for some | 7 |
|
