| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what it is [prep] | 82 |
|
| 2 | [prep] what it [be] for | 13 |
|
| 3 | [prep] what it be for | 13 |
|
| 4 | [prep] [pron] it is for | 12 |
|
| 5 | [prep] what it is for | 12 |
|
| 6 | [prep] what [pers pn] is for | 12 |
|
| 7 | [prep] what [pron] is for | 12 |
|
| 8 | [prep] what it [is] for | 12 |
|
