| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] [det] | 449 |
|
| 2 | could [adv] [vb infin] to | 355 |
|
| 3 | [adv] [vb infin] to [det] | 255 |
|
| 4 | could [vb infin] to [det] | 146 |
|
