| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [not/n't] [vb infin] [noun] | 595 |
|
| 2 | [adj] [pron] could [not/n't] [vb infin] | 144 |
|
| 3 | [adj] [pron] could [vb infin] [noun] | 21 |
|
