| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [conj] [verb] | 21274 |
|
| 2 | [conj] [verb] whether | 659 |
|
| 3 | [to-vb] [verb] whether | 28 |
|
| 4 | [to-vb] [conj] whether | 24 |
|
