| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] for many year | 24 |
|
| 2 | [vb -s] been [vb pp] for many year | 24 |
|
| 3 | [vb -s] [been] [vb pp] for many year | 24 |
|
| 4 | [vb -s] [been] [vb pp] for many years | 24 |
|
| 5 | [vb -s] [been] used for many year | 7 |
|
| 6 | [vb -s] [been] known for many year | 5 |
|
