| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] us if [pers pn] [vb base] | 24 |
|
| 2 | [vb infin] us if we [vb base] | 13 |
|
| 3 | tell us if [pers pn] [vb base] | 9 |
|
| 4 | [vb infin] us if you [vb base] | 8 |
|
| 5 | [vb infin] us if [pers pn] know | 6 |
|
