| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [pron] could [adv] [vb infin] | 1346 |
|
| 2 | but it [modal v] [adv] [vb infin] | 681 |
|
| 3 | [conj] it could [adv] [vb infin] | 328 |
|
| 4 | but it could [adv] [verb] | 80 |
|
