| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [unc] | 18378 |
|
| 2 | [not/n't] a [noun] | 10824 |
|
| 3 | [not/n't] [noun] [unc] | 380 |
|
| 4 | [not/n't] a [unc] | 39 |
|
