| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [pron] [art] | 431 |
|
| 2 | [vb mod] [vb infin] i [art] | 399 |
|
| 3 | [modal v] [vb infin] i [art] | 399 |
|
| 4 | could [verb] i [art] | 50 |
|
| 5 | could [vb infin] i [art] | 49 |
|
