| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh adv] we could [not/n't] [vb infin] | 11 |
|
| 2 | [noun] [Wh adv] we could n't [vb infin] | 8 |
|
| 3 | [noun sg] [Wh adv] we could [not/n't] [vb infin] | 8 |
|
| 4 | reason [Wh adv] we could [not/n't] [vb infin] | 6 |
|
| 5 | [noun] why we could [not/n't] [vb infin] | 6 |
|
| 6 | reason [Wh adv] we could [not/n't] [vb infin] | 5 |
|
