| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | choice [prep] whether [to-vb] | 5 |
|
| 2 | choice of whether [verb] | 5 |
|
| 3 | choice [prep] whether [verb] | 5 |
|
| 4 | choice of whether [verb] | 5 |
|
