| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [conj] it | 2565 |
|
| 2 | [prep] [subord] it | 1958 |
|
| 3 | [prep] whether [pron] | 1384 |
|
| 4 | [prep] whether it | 282 |
|
