| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | need not [adv] be | 86 |
|
| 2 | need not [adv] be | 86 |
|
| 3 | need not [adv] be | 82 |
|
| 4 | need not necessarily be | 53 |
|
| 5 | need not necessarily be | 53 |
|
| 6 | need not always be | 16 |
|
| 7 | need not always be | 16 |
|
