| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] for many year in | 5 |
|
| 2 | [been] [vb pp] for many year in | 5 |
|
| 3 | [been] [vb pp] for many years in | 5 |
|
| 4 | [been] used for many year in | 5 |
|
