| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] for [det] years | 16 |
|
| 2 | have been [vb pp] for many [noun pl] | 16 |
|
| 3 | have been known for [det] [noun pl] | 7 |
|
| 4 | have been [vb pp] for several [noun pl] | 5 |
|
