| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a [noun] [noun] | 8192 |
|
| 2 | [not/n't] a [noun] [noun] | 1024 |
|
| 3 | not a [noun] [noun] | 1023 |
|
| 4 | n't [art] [noun] [noun] | 266 |
|
