| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could i [verb] | 740 |
|
| 2 | could i [vb infin] | 729 |
|
| 3 | could [pron] refuse | 12 |
|
| 4 | [vb mod] i refuse | 10 |
|
| 5 | [modal v] i refuse | 10 |
|
| 6 | could i refuse | 7 |
|
| 7 | could i refuse | 7 |
|
