| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [conj] [pron] could [verb] | 427 |
|
| 2 | [coord] whether [pron] [modal v] [verb] | 154 |
|
| 3 | [coord] whether [pron] [vb mod] [verb] | 154 |
|
| 4 | [conj] whether [pron] could [verb] | 16 |
|
| 5 | [coord] whether [pron] could [verb] | 14 |
|
