| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] have n't [be] | 6 |
|
| 2 | a [noun] have n't [been] | 6 |
|
| 3 | a [noun] have n't been | 6 |
|
| 4 | a [noun] have n't be | 6 |
|
