| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [pron] could | 2700 |
|
| 2 | [vb past] [pers pn] could | 2608 |
|
| 3 | [vb past] you [modal v] | 1414 |
|
| 4 | [verb] you could | 959 |
|
| 5 | [vb past] you could | 162 |
|
