| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not always [be] | 284 |
|
| 2 | need not [adv] [be] | 86 |
|
| 3 | need [adv] always [be] | 16 |
|
| 4 | need not always [be] | 16 |
|
