| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what it [is] | 426 |
|
| 2 | what it [is] for | 65 |
|
| 3 | [prep] it [is] for | 15 |
|
| 4 | [prep] what [is] for | 8 |
|
