| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] whether it [verb] | 9 |
|
| 2 | [prep] [v-ing] whether it [verb] | 9 |
|
| 3 | [prep] [v-ing] whether it [vb -s] | 7 |
|
| 4 | in [v-ing] whether it [verb] | 6 |
|
