| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] a | 15588 |
|
| 2 | [not/n't] [vb infin] a | 11435 |
|
| 3 | [not/n't] need [art] | 509 |
|
| 4 | [adv] need a | 477 |
|
| 5 | [not/n't] need a | 357 |
|
