| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [noun] | 923 |
|
| 2 | [not/n't] [vb infin] [noun] [noun sg] | 729 |
|
| 3 | could [not/n't] [vb infin] [noun sg] | 440 |
|
| 4 | could [vb infin] [noun] [noun sg] | 250 |
|
