| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [to-vb] a [noun sg] | 85 |
|
| 2 | on whether a [noun sg] | 24 |
|
| 3 | on whether [to-vb] [noun sg] | 16 |
|
| 4 | on whether [to-vb] a | 8 |
|
