| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] [not/n't] [vb infin] | 106 |
|
| 2 | [modal v] we [not/n't] [vb infin] | 94 |
|
| 3 | could we [adv] [vb infin] | 64 |
|
| 4 | could we [not/n't] [verb] | 21 |
|
