| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [to-vb] whether [to-vb] [art] | 21 |
|
| 2 | [vb -s] [to-vb] [conj] [to-vb] [art] | 10 |
|
| 3 | [vb -s] [verb] whether [to-vb] [art] | 8 |
|
| 4 | [vb -s] [to-vb] whether [verb] [art] | 7 |
|
| 5 | [vb -s] [to-vb] whether [to-vb] [art] | 7 |
|
