| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be for many years | 55 |
|
| 2 | [be] for many years | 55 |
|
| 3 | [was/were] for many years | 28 |
|
| 4 | [been] for many years | 25 |
|
| 5 | was for many years | 25 |
|
| 6 | been for many years | 25 |
|
