| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be for [det] years | 73 |
|
| 2 | [be] for many years | 55 |
|
| 3 | [been] for [det] years | 36 |
|
| 4 | been for [det] years | 36 |
|
| 5 | [was/were] for [det] years | 34 |
|
| 6 | was for [det] years | 30 |
|
| 7 | [be] for some years | 13 |
|
