| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been made in [adj] years | 8 |
|
| 2 | have been made in [adj] years | 8 |
|
| 3 | [verb] been made in [adj] years | 7 |
|
| 4 | [verb] been made in recent years | 5 |
|
| 5 | [vb base] been made in [adj] years | 5 |
|
| 6 | [verb] been made in recent years | 5 |
|
| 7 | have been made in [adj] years | 5 |
|
