| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what is it for | 18 |
|
| 2 | what is it for | 18 |
|
| 3 | [Wh det] is it for | 18 |
|
| 4 | who is it for | 5 |
|
| 5 | [Wh pn] is it for | 5 |
|
| 6 | who is it for | 5 |
|
