| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] a [noun] | 34350 |
|
| 2 | n't a [noun] | 1542 |
|
| 3 | n't [vb pp] a | 1455 |
|
| 4 | n't [vb pp] [noun] | 879 |
|
