| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] what it [is] for | 22 |
|
| 2 | [verb] what it [is] for | 22 |
|
| 3 | [verb] what it is for | 13 |
|
| 4 | know what it [is] for | 9 |
|
| 5 | [verb] what it 's for | 9 |
|
| 6 | [vb infin] what it [is] for | 8 |
|
| 7 | know what it [is] for | 5 |
|
