| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] if it [verb] | 421 |
|
| 2 | [prep] [v-ing] it [verb] | 318 |
|
| 3 | [v-ing] if it [verb] | 27 |
|
| 4 | [prep] [v-ing] if it | 18 |
|
| 5 | [prep] [v-ing] if [verb] | 8 |
|
