| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] [conj] [adv] a [noun] | 15 |
|
| 2 | a [adj] [conj] not a [noun] | 6 |
|
| 3 | a [adj] [conj] not [art] [noun] | 6 |
|
| 4 | [art] [adj] [conj] not a [noun] | 6 |
|
| 5 | a [adj] [conj] not [art] [noun] | 6 |
|
| 6 | a [adj] [conj] [not/n't] a [noun] | 5 |
|
| 7 | a [adj] [conj] not a [noun] | 5 |
|
