| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been known for [det] year | 15 |
|
| 2 | have been known for [det] year | 15 |
|
| 3 | have been known for [det] year | 7 |
|
| 4 | [vb base] been known for [det] year | 7 |
|
| 5 | [vb -s] been known for [det] year | 6 |
|
| 6 | has been known for [det] year | 6 |
|
