| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] [noun] [noun sg] | 24 |
|
| 2 | could [not/n't] [verb] [noun] [noun sg] | 24 |
|
| 3 | could [not/n't] [verb] [noun sg] [noun sg] | 17 |
|
| 4 | could not [verb] [noun] [noun sg] | 15 |
|
| 5 | could n't [verb] [noun] [noun sg] | 9 |
|
