| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] whether they [verb] [verb] | 8 |
|
| 2 | [verb] [prep] whether they [vb base] [verb] | 7 |
|
| 3 | [verb] [prep] whether they [verb] [vb pp] | 5 |
|
