| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not always be | 261 |
|
| 2 | may not always be | 124 |
|
| 3 | can not always be | 52 |
|
| 4 | will not always be | 45 |
|
| 5 | need not always be | 16 |
|
| 6 | might not always be | 12 |
|
| 7 | could not always be | 5 |
|
