| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [prep] [noun sg] | 20440 |
|
| 2 | whether [prep] [noun sg] | 450 |
|
| 3 | whether [to-vb] [prep] | 191 |
|
| 4 | whether [to-vb] [noun sg] | 111 |
|
