| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] it | 7641 |
|
| 2 | [verb] whether it | 971 |
|
| 3 | [vb past] [verb] whether | 238 |
|
| 4 | [vb past] whether it | 77 |
|
