| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [vb infin] | 21338 |
|
| 2 | [noun sg] could [vb infin] | 9978 |
|
| 3 | [noun sg] could [not/n't] | 2993 |
|
| 4 | [noun sg] [not/n't] [vb infin] | 62 |
|
