| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [noun] | 1732 |
|
| 2 | could [adv] [vb infin] [noun] | 809 |
|
| 3 | [modal v] never [vb infin] [noun] | 351 |
|
| 4 | could never [verb] [noun] | 50 |
|
| 5 | could never [vb infin] [noun] | 50 |
|
