| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [is] it for | 53 |
|
| 2 | what [is] it for | 53 |
|
| 3 | [Wh det] 's it for | 35 |
|
| 4 | [Wh det] is it for | 18 |
|
