| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if [pers pn] [vb past] [verb] | 5343 |
|
| 2 | what [pers pn] [vb past] [verb] | 3013 |
|
| 3 | what if [pers pn] [verb] | 384 |
|
| 4 | what if [pers pn] [vb past] | 143 |
|
