| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to have been [vb pp] for | 78 |
|
| 2 | to have [be] [vb pp] for | 78 |
|
| 3 | to have be [vb pp] for | 78 |
|
| 4 | to have [been] [vb pp] for | 78 |
|
| 5 | to have [be] used for | 10 |
|
| 6 | to have [be] designed for | 6 |
|
