| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] [to-vb] | 48712 |
|
| 2 | [pron] [vb past] whether | 424 |
|
| 3 | [vb past] whether [to-vb] | 55 |
|
| 4 | [pron] whether [to-vb] | 7 |
|
