| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [pers pn] | 3156 |
|
| 2 | could [not/n't] [verb] [noun] | 925 |
|
| 3 | [not/n't] [verb] [pers pn] [noun] | 492 |
|
| 4 | could [verb] [pers pn] [noun] | 95 |
|
| 5 | could [not/n't] [pers pn] [noun] | 8 |
|
