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