| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] but [Wh pn] could | 6 |
|
| 2 | but [indef pn] [Wh pn] could | 6 |
|
| 3 | but [pron] [Wh pn] could | 6 |
|
| 4 | but [Wh pn] could [vb infin] | 15 |
|
| 5 | but [Wh pn] could [verb] | 15 |
|
| 6 | but [Wh pn] could [adv] | 8 |
|
| 7 | but [Wh pn] could not | 5 |
|
| 8 | but [Wh pn] could [not/n't] | 5 |
|
| 9 | but [Wh pn] could not | 5 |
|
