| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] had [been] [vb pp] for | 83 |
|
| 2 | [Wh det] [vb past] been [vb pp] for | 83 |
|
| 3 | [Wh det] [vb past] [been] [vb pp] for | 83 |
|
| 4 | which [vb past] [been] [vb pp] for | 76 |
|
| 5 | [Wh det] [vb past] [been] used for | 10 |
|
| 6 | what [vb past] [been] [vb pp] for | 7 |
|
| 7 | [Wh det] [vb past] [been] scheduled for | 7 |
|
