| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [verb] [pron] | 1638 |
|
| 2 | could [vb infin] [verb] [art] | 1240 |
|
| 3 | [vb infin] [verb] [pron] [art] | 812 |
|
| 4 | could [verb] [pron] [art] | 433 |
|
| 5 | could [vb infin] [pron] [art] | 431 |
|
