| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if it [verb] [not/n't] | 842 |
|
| 2 | [prep] if it [verb] | 421 |
|
| 3 | [prep] it [verb] [not/n't] | 162 |
|
| 4 | [prep] if [verb] [not/n't] | 5 |
|
