| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [pron] could [vb infin] | 847 |
|
| 2 | [det] [indef pn] [modal v] [vb infin] | 282 |
|
| 3 | [adj] [indef pn] could [vb infin] | 68 |
|
| 4 | [det] [indef pn] could [verb] | 45 |
|
