| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | whether [coord] [adv] [pron] could [verb] | 10 |
|
| 2 | [subord] [coord] [adv] [pron] could [vb infin] | 10 |
|
| 3 | [subord] [coord] not [pron] could [verb] | 10 |
|
| 4 | [subord] [coord] not [pron] could [verb] | 10 |
|
| 5 | [subord] [coord] [not/n't] [pron] could [verb] | 10 |
|
| 6 | [subord] or [adv] [pron] could [verb] | 10 |
|
| 7 | [subord] [coord] [adv] [pers pn] could [verb] | 9 |
|
