| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] they [modal v] | 1439 |
|
| 2 | [vb past] they [vb mod] | 1439 |
|
| 3 | [vb past] [pron] ought | 198 |
|
| 4 | [verb] they ought | 52 |
|
| 5 | [vb past] they ought | 16 |
|
