| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [to-vb] [prep] [noun sg] | 33 |
|
| 2 | [prep] whether [to-vb] [prep] | 31 |
|
| 3 | [prep] whether [to-vb] [noun sg] | 30 |
|
| 4 | [prep] [to-vb] [prep] [noun sg] | 18 |
|
| 5 | [prep] whether [prep] [noun sg] | 10 |
|
