| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if they [verb] | 8869 |
|
| 2 | if they [vb past] | 3578 |
|
| 3 | if [pron] knew | 623 |
|
| 4 | if [pers pn] knew | 604 |
|
| 5 | [conj] they knew | 395 |
|
| 6 | if they know | 155 |
|
| 7 | if they knew | 86 |
|
