| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [prep] [verb] [art] | 3292 |
|
| 2 | a [noun] [prep] whether [art] | 65 |
|
| 3 | [noun] [prep] whether [verb] [art] | 40 |
|
| 4 | a [noun] [prep] whether [verb] | 31 |
|
