| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for [det] years | 77 |
|
| 2 | be [vb pp] for many years | 73 |
|
| 3 | be [vb pp] for some years | 20 |
|
| 4 | be [vb pp] for [det] years | 16 |
|
| 5 | be known for [det] years | 16 |
|
| 6 | be [vb pp] for several years | 15 |
|
| 7 | be used for [det] years | 14 |
|
| 8 | was [vb pp] for [det] years | 12 |
|
