| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not [vb infin] [noun sg] | 2872 |
|
| 2 | could not [vb infin] [noun] | 920 |
|
| 3 | could [adv] [vb infin] [noun sg] | 818 |
|
| 4 | could not [verb] [noun sg] | 439 |
|
