| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [prep] a [adj] | 74 |
|
| 2 | [modal v] [not/n't] [verb] for a [adj] | 45 |
|
| 3 | could [not/n't] [verb] for [art] [adj] | 20 |
|
| 4 | could [adv] [verb] for a [adj] | 18 |
|
