| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] whether a [noun sg] | 154 |
|
| 2 | whether [to-vb] a [noun sg] | 85 |
|
| 3 | [prep] [to-vb] a [noun sg] | 63 |
|
| 4 | [prep] whether [to-vb] [noun sg] | 30 |
|
| 5 | [prep] whether [to-vb] a | 21 |
|
