| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [to-vb] whether [art] | 12 |
|
| 2 | [prep] [v-ing] [to-vb] whether the | 10 |
|
| 3 | [prep] [v-ing] [to-vb] whether the | 10 |
|
| 4 | of [v-ing] [to-vb] whether [art] | 6 |
|
| 5 | [prep] [v-ing] to decide whether [art] | 5 |
|
