| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [noun] | 1732 |
|
| 2 | could [adv] [vb infin] [noun sg] | 818 |
|
| 3 | [modal v] [adv] [vb infin] time | 168 |
|
| 4 | could [adv] [vb infin] time | 16 |
|
| 5 | could [adv] [verb] time | 16 |
|
