| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be in vain | 10 |
|
| 2 | [modal v] be in vain | 10 |
|
| 3 | [adv] be in vain | 6 |
|
| 4 | [not/n't] be in vain | 5 |
|
| 5 | not be in vain | 5 |
|
| 6 | not be in vain | 5 |
|
