| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but you need not | 20 |
|
| 2 | but you need [not/n't] | 20 |
|
| 3 | but you need [adv] | 20 |
|
| 4 | but you need n't | 12 |
|
| 5 | but you need not | 8 |
|
