| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be known [prep] [adj] years | 7 |
|
| 2 | have been known [prep] [adj] years | 7 |
|
| 3 | have [been] known [prep] [adj] years | 7 |
|
| 4 | have [be] known [prep] [adj] years | 7 |
|
