| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [pron] [vb infin] [pron] [modal v] [verb] | 670 |
|
| 2 | [vb base] [pron] [verb] [pron] could [verb] | 161 |
|
| 3 | [verb] [pron] [vb infin] [pron] could [verb] | 160 |
|
