| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] they [modal v] [vb infin] | 749 |
|
| 2 | [prep] they [vb mod] [vb infin] | 749 |
|
| 3 | [prep] [pron] could [vb infin] | 414 |
|
| 4 | [prep] they could [vb infin] | 106 |
|
| 5 | [prep] they could [vb infin] | 105 |
|
| 6 | [prep] they could [verb] | 105 |
|
