| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] if they [verb] that | 17 |
|
| 2 | [verb] if they [vb base] that | 10 |
|
| 3 | [verb] if they [vb past] that | 7 |
|
| 4 | [vb infin] if they [verb] that | 7 |
|
| 5 | [verb] if they know that | 5 |
|
