| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] could [adv] [vb infin] | 464 |
|
| 2 | could [adv] [vb infin] to | 355 |
|
| 3 | [conj] could [vb infin] to | 110 |
|
| 4 | [conj] [adv] [vb infin] to | 21 |
|
