| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [is] [prep] it for | 39 |
|
| 2 | what [is] in it for | 39 |
|
| 3 | what 's [prep] it for | 34 |
|
| 4 | what is [prep] it for | 5 |
|
