| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] what it [be] for | 12 |
|
| 2 | [vb infin] [Wh det] it be for | 12 |
|
| 3 | [vb infin] [Wh det] it [be] for | 12 |
|
| 4 | [vb infin] [Wh det] it [is] for | 8 |
|
| 5 | know [Wh det] it [be] for | 6 |
|
