| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | need n't [vb infin] be | 11 |
|
| 2 | need n't [verb] be | 11 |
|
| 3 | need n't [verb] been | 10 |
|
| 4 | need n't have be | 10 |
|
| 5 | need n't have be | 10 |
|
