| Yksikön ensimmäinen persoona | Yksikön toinen persoona | Yksikön kolmas persoona | Monikon ensimmäinen persoona | Monikon toinen persoona | Monikon kolmas persoona | |
|---|---|---|---|---|---|---|
| Simple present | stiffen | stiffen | stiffens | stiffen | stiffen | stiffen |
| Present continuous | am stiffening | are stiffening | is stiffening | are stiffening | are stiffening | are stiffening |
| Simple past | stiffened | stiffened | stiffened | stiffened | stiffened | stiffened |
| Simple past | was stiffening | were stiffening | was stiffening | were stiffening | were stiffening | were stiffening |
| Simple future | will stiffen | will stiffen | will stiffen | will stiffen | will stiffen | will stiffen |
| Future continuous | will be stiffening | will be stiffening | will be stiffening | will be stiffening | will be stiffening | will be stiffening |
| Present perfect | have stiffened | have stiffened | has stiffened | have stiffened | have stiffened | have stiffened |
| Present perfect continuous | have been stiffening | have been stiffening | has been stiffening | have been stiffening | have been stiffening | have been stiffening |
| Past perfect | had stiffened | had stiffened | had stiffened | had stiffened | had stiffened | had stiffened |
| Past perfect continuous | had been stiffening | had been stiffening | had been stiffening | had been stiffening | had been stiffening | had been stiffening |
| Future perfect | will have stiffened | will have stiffened | will have stiffened | will have stiffened | will have stiffened | will have stiffened |
| Future perfect continuous | will have been stiffening | will have been stiffening | will have been stiffening | will have been stiffening | will have been stiffening | will have been stiffening |
| Yksikön ensimmäinen persoona | Yksikön toinen persoona | Yksikön kolmas persoona | Monikon ensimmäinen persoona | Monikon toinen persoona | Monikon kolmas persoona | |
|---|---|---|---|---|---|---|
| Simple present | don't stiffen | don't stiffen | doesn't stiffen | don't stiffen | don't stiffen | don't stiffen |
| Present continuous | am not stiffening | are not stiffening | is not stiffening | are not stiffening | are not stiffening | are not stiffening |
| Simple past | didn't stiffen | didn't stiffen | didn't stiffen | didn't stiffen | didn't stiffen | didn't stiffen |
| Simple past | was not stiffening | were not stiffening | was not stiffening | were not stiffening | were not stiffening | were not stiffening |
| Simple future | won't stiffen | won't stiffen | won't stiffen | won't stiffen | won't stiffen | won't stiffen |
| Future continuous | will not be stiffening | will not be stiffening | will not be stiffening | will not be stiffening | will not be stiffening | will not be stiffening |
| Present perfect | have not stiffened | have not stiffened | has not stiffened | have not stiffened | have not stiffened | have not stiffened |
| Present perfect continuous | have not been stiffening | have not been stiffening | has not been stiffening | have not been stiffening | have not been stiffening | have not been stiffening |
| Past perfect | had not stiffened | had not stiffened | had not stiffened | had not stiffened | had not stiffened | had not stiffened |
| Past perfect continuous | had not been stiffening | had not been stiffening | had not been stiffening | had not been stiffening | had not been stiffening | had not been stiffening |
| Future perfect | will not have stiffened | will not have stiffened | will not have stiffened | will not have stiffened | will not have stiffened | will not have stiffened |
| Future perfect continuous | will not have been stiffening | will not have been stiffening | will not have been stiffening | will not have been stiffening | will not have been stiffening | will not have been stiffening |