| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [modal v] [not/n't] [vb infin] | 5151 |
|
| 2 | [noun] could [not/n't] [vb infin] | 4000 |
|
| 3 | [noun pl] could [adv] [vb infin] | 1564 |
|
| 4 | [noun pl] could [not/n't] [verb] | 821 |
|
