| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [vb pp] for a | 107 |
|
| 2 | has be [vb pp] for a | 107 |
|
| 3 | has be used for a | 8 |
|
| 4 | has be made for a | 6 |
|
| 5 | has be known for a | 6 |
|
