| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] if it [verb] | 421 |
|
| 2 | [prep] if [pron] do | 223 |
|
| 3 | [prep] [conj] it do | 48 |
|
| 4 | [prep] [subord] it do | 27 |
|
| 5 | [prep] if it do | 22 |
|
