| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [det] [be] not [art] | 868 |
|
| 2 | [conj] [det] [be] [adv] a | 827 |
|
| 3 | [conj] [det] [be] [not/n't] a | 357 |
|
| 4 | [conj] [det] [be] not a | 356 |
|
| 5 | [conj] [adj] [be] not a | 312 |
|
