| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] i [vb infin] [adj] | 59 |
|
| 2 | could i [vb infin] [adj] | 58 |
|
| 3 | could [pron] [vb infin] [adj] | 38 |
|
| 4 | could i [verb] [adj] | 6 |
|
