| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [art] [adj] | 605 |
|
| 2 | [modal v] [not/n't] [verb] [art] same | 144 |
|
| 3 | could [adv] [verb] [art] same | 30 |
|
| 4 | could [not/n't] [verb] [art] [det] | 20 |
|
| 5 | could [not/n't] [verb] [art] same | 14 |
|
