| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] | 32770 |
|
| 2 | they [adv] [vb infin] | 529 |
|
| 3 | could they [vb infin] | 220 |
|
| 4 | could they [adv] | 48 |
|
