| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | know what it is [prep] | 43 |
|
| 2 | [verb] what it is for | 13 |
|
| 3 | know what it be for | 10 |
|
| 4 | know what it [be] for | 10 |
|
| 5 | know what it [is] for | 9 |
|
| 6 | know what [pers pn] is for | 5 |
|
| 7 | know [pron] it is for | 5 |
|
| 8 | know what it is for | 5 |
|
| 9 | know what [pron] is for | 5 |
|
