| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] a | 2641 |
|
| 2 | [pers pn] could [verb] a | 2364 |
|
| 3 | they [modal v] [verb] a | 1690 |
|
| 4 | they could [verb] [art] | 710 |
|
| 5 | they could [verb] [art] | 710 |
|
| 6 | they could [verb] a | 258 |
|
| 7 | they could [verb] a | 238 |
|
