| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [pron] could [verb] | 1157 |
|
| 2 | [vb infin] [pron] could [verb] | 575 |
|
| 3 | [vb base] [vb infin] [pron] [verb] | 288 |
|
| 4 | [vb base] [vb infin] [pron] could | 9 |
|
