| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [pron] could [verb] [adv] | 325 |
|
| 2 | [adv] [pers pn] could [verb] [adv] | 315 |
|
| 3 | [adv] they [modal v] [verb] [adv] | 296 |
|
| 4 | [adv] they could [verb] [adv] | 52 |
|
| 5 | [adv] they could [verb] [adv] | 41 |
|
