| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] [vb infin] [noun] [noun] | 589 |
|
| 2 | could [adv] [vb infin] [noun] [noun] | 178 |
|
| 3 | could [not/n't] [verb] [noun] [noun] | 81 |
|
