| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun sg] | 2101000 |
|
| 2 | whether [art] [noun sg] | 4356 |
|
| 3 | [prep] whether [art] | 1326 |
|
| 4 | [prep] whether [noun sg] | 231 |
|
