| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if they do [adv] use | 6 |
|
| 2 | if they do [adv] use | 6 |
|
| 3 | if they do not use | 6 |
|
| 4 | if they do [not/n't] use | 6 |
|
