| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have [been] [verb] | 2875 |
|
| 2 | to have [been] [vb pp] | 2668 |
|
| 3 | [verb] [been] used | 1738 |
|
| 4 | have [been] used | 1738 |
|
| 5 | to have [been] use | 52 |
|
| 6 | to have [be] used | 51 |
|
| 7 | [to-vb] [been] used | 51 |
|
