| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if [adv] use | 17 |
|
| 2 | if [adv] used | 13 |
|
| 3 | if [adv] use | 9 |
|
| 4 | if [not/n't] use | 8 |
|
| 5 | if not use | 8 |
|
| 6 | if not use | 8 |
|
