| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [verb] [art] | 409 |
|
| 2 | whether [to-vb] [art] | 370 |
|
| 3 | [conj] to change [art] | 25 |
|
| 4 | [subord] to change [art] | 9 |
|
| 5 | whether change [art] | 6 |
|
| 6 | whether to change [art] | 6 |
|
