could overharden
Verbe régulier : overharden - overhardened- overhardened

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could overharden
you could overharden
she could overharden
we could overharden
you could overharden
they could overharden 	I could be overhardening
you could be overhardening
she could be overhardening
we could be overhardening
you could be overhardening
they could be overhardening	I could have overhardened
you could have overhardened
she could have overhardened
we could have overhardened
you could have overhardened
they could have overhardened	I could have been overhardening
you could have been overhardening
she could have been overhardening
we could have been overhardening
you could have been overhardening
they could have been overhardening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't overharden
you couldn't overharden
she couldn't overharden
we couldn't overharden
you couldn't overharden
they couldn't overharden 	I couldn't be overhardening
you couldn't be overhardening
she couldn't be overhardening
we couldn't be overhardening
you couldn't be overhardening
they couldn't be overhardening	I couldn't have overhardened
you couldn't have overhardened
she couldn't have overhardened
we couldn't have overhardened
you couldn't have overhardened
they couldn't have overhardened	I couldn't have been overhardening
you couldn't have been overhardening
she couldn't have been overhardening
we couldn't have been overhardening
you couldn't have been overhardening
they couldn't have been overhardening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I overharden?
could you overharden?
could she overharden?
could we overharden?
could you overharden?
could they overharden? 	could I be overhardening?
could you be overhardening?
could she be overhardening?
could we be overhardening?
could you be overhardening?
could they be overhardening? 	could I have overhardened?
could you have overhardened?
could she have overhardened?
could we have overhardened?
could you have overhardened?
could they have overhardened? 	could I have been overhardening?
could you have been overhardening?
could she have been overhardening?
could we have been overhardening?
could you have been overhardening?
could they have been overhardening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I overharden?
couldn't you overharden?
couldn't she overharden?
couldn't we overharden?
couldn't you overharden?
couldn't they overharden? 	couldn't I be overhardening?
couldn't you be overhardening?
couldn't she be overhardening?
couldn't we be overhardening?
couldn't you be overhardening?
couldn't they be overhardening? 	couldn't I have overhardened?
couldn't you have overhardened?
couldn't she have overhardened?
couldn't we have overhardened?
couldn't you have overhardened?
couldn't they have overhardened? 	couldn't I have been overhardening?
couldn't you have been overhardening?
couldn't she have been overhardening?
couldn't we have been overhardening?
couldn't you have been overhardening?
couldn't they have been overhardening?