| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [verb] [to-vb] | 25446 |
|
| 2 | [pron] [modal v] [verb] whether | 359 |
|
| 3 | [modal v] [verb] whether [to-vb] | 76 |
|
| 4 | [pron] [verb] whether [to-vb] | 60 |
|
