| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [adv] [vb infin] [pron] | 551 |
|
| 2 | could [adv] [vb infin] [pron] to | 102 |
|
| 3 | [adv] [adv] [vb infin] [pron] to | 90 |
|
| 4 | could [adv] [adv] [vb infin] to | 66 |
|
| 5 | could [adv] [vb infin] [pron] to | 34 |
|
