| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [verb] [pers pn] [modal v] [vb infin] | 637 |
|
| 2 | [vb mod] [verb] [pron] could [vb infin] | 73 |
|
| 3 | [modal v] [verb] [pers pn] could [vb infin] | 67 |
|
| 4 | [vb mod] [verb] [pers pn] could [verb] | 67 |
|
