| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [pron] could [adv] [verb] | 2039 |
|
| 2 | [subord] they [modal v] [adv] [verb] | 1199 |
|
| 3 | [subord] they [vb mod] [adv] [verb] | 1199 |
|
| 4 | [conj] they could [adv] [verb] | 693 |
|
| 5 | [subord] they could [adv] [verb] | 262 |
|
