| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] [verb] | 34151 |
|
| 2 | [vb past] they [verb] | 3491 |
|
| 3 | [vb past] they [modal v] | 1415 |
|
| 4 | [vb past] [modal v] [verb] | 496 |
|
