| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] [adj] years | 35 |
|
| 2 | [vb base] been [vb pp] in [adj] years | 33 |
|
| 3 | [vb base] been [vb pp] [prep] recent years | 32 |
|
| 4 | [vb base] been made [prep] [adj] years | 5 |
|
