| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been known [prep] [det] | 38 |
|
| 2 | have been [prep] [det] years | 35 |
|
| 3 | been known [prep] [det] years | 15 |
|
| 4 | have known [prep] [det] years | 7 |
|
