| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] | 32770 |
|
| 2 | i [adv] [vb infin] | 1248 |
|
| 3 | could i [vb infin] | 729 |
|
| 4 | could i [adv] | 208 |
|
