| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [modal v] do | 1448 |
|
| 2 | [vb past] they [modal v] | 1439 |
|
| 3 | [vb past] they do | 84 |
|
| 4 | [vb past] [modal v] do | 7 |
|
