| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they could | 3213 |
|
| 2 | but [pron] could | 2961 |
|
| 3 | but [pers pn] could | 2731 |
|
| 4 | but they [vb mod] | 1861 |
|
| 5 | but they [modal v] | 1861 |
|
| 6 | but they could | 218 |
|
| 7 | but they could | 218 |
|
