| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb past] [pron] could [verb] [pers pn] | 8 |
|
| 2 | they [verb] [pron] could [verb] [pers pn] | 8 |
|
| 3 | they [verb] [pron] could [vb infin] [pers pn] | 8 |
|
| 4 | they [verb] [pers pn] could [verb] [pers pn] | 7 |
|
| 5 | they [verb] they could [verb] [pers pn] | 6 |
|
| 6 | they [verb] they could [verb] [pers pn] | 6 |
|
