| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] has been [vb pp] for | 70 |
|
| 2 | which has [been] [vb pp] for | 58 |
|
| 3 | what has [been] [vb pp] for | 12 |
|
| 4 | [Wh det] has [been] used for | 7 |
|
| 5 | [Wh det] has [been] blamed for | 5 |
|
