| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if [pron] [verb] | 79141 |
|
| 2 | [vb past] [pron] [verb] | 59078 |
|
| 3 | [vb past] if [pron] | 1923 |
|
| 4 | [vb past] if [verb] | 17 |
|
