| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they could [verb] [adv] | 217 |
|
| 2 | before [pron] could [verb] [adv] | 126 |
|
| 3 | before [pers pn] could [verb] [adv] | 121 |
|
| 4 | [subord] they could [verb] [adv] | 100 |
|
| 5 | before they [modal v] [verb] [adv] | 21 |
|
| 6 | before they could [verb] [adv] | 11 |
|
| 7 | before they could [verb] [adv] | 11 |
|
