| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] if it [verb] | 421 |
|
| 2 | [prep] if it [vb past] | 355 |
|
| 3 | if it [vb past] [verb] | 347 |
|
| 4 | [prep] it [vb past] [verb] | 114 |
|
