| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] could [pers pn] | 14 |
|
| 2 | could could [pers pn] | 13 |
|
| 3 | could could [pers pn] | 13 |
|
| 4 | [modal v] could you | 9 |
|
