| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] do | 298 |
|
| 2 | could [pers pn] do | 290 |
|
| 3 | could they [verb] | 220 |
|
| 4 | could they [vb infin] | 220 |
|
| 5 | [vb mod] they do | 140 |
|
| 6 | [modal v] they do | 140 |
|
| 7 | could they do | 25 |
|
| 8 | could they do | 25 |
|
| 9 | could they do | 25 |
|
