| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] whether [to-vb] | 254 |
|
| 2 | [prep] whether [to-vb] | 254 |
|
| 3 | on whether [verb] | 112 |
|
| 4 | on [conj] [to-vb] | 108 |
|
| 5 | on whether [to-vb] | 105 |
|
