| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [conj] it [verb] | 820 |
|
| 2 | [prep] [subord] it [verb] | 528 |
|
| 3 | [prep] whether [pron] [verb] | 414 |
|
| 4 | [prep] whether it [verb] | 62 |
|
