| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] if [pron] [vb past] [pron] | 450 |
|
| 2 | [modal v] [verb] if [pron] [vb past] | 390 |
|
| 3 | [modal v] [verb] [pron] [vb past] [pron] | 160 |
|
| 4 | [modal v] if [pron] [vb past] [pron] | 15 |
|
