| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb infin] what it [is] for | 7 |
|
| 2 | [not/n't] [vb infin] what it [is] for | 6 |
|
| 3 | n't [vb infin] what it [is] for | 5 |
|
| 4 | not [vb infin] what it [is] for | 5 |
|
