| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] if it [verb] | 421 |
|
| 2 | [prep] if it [vb past] | 355 |
|
| 3 | [prep] if [pron] knew | 88 |
|
| 4 | [prep] [subord] it knew | 5 |
|
| 5 | [prep] [conj] it knew | 5 |
|
| 6 | [prep] if it knew | 5 |
|
| 7 | [prep] if it know | 5 |
|
