| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't a [noun] [noun] | 169 |
|
| 2 | [adv] a [letter] [noun] | 40 |
|
| 3 | n't [art] [letter] [noun] | 12 |
|
| 4 | [not/n't] a [letter] [noun] | 11 |
|
| 5 | not a [letter] [noun] | 11 |
|
