could harshen
Verbe régulier : harshen - harshened- harshened

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could harshen
you could harshen
she could harshen
we could harshen
you could harshen
they could harshen 	I could be harshening
you could be harshening
she could be harshening
we could be harshening
you could be harshening
they could be harshening	I could have harshened
you could have harshened
she could have harshened
we could have harshened
you could have harshened
they could have harshened	I could have been harshening
you could have been harshening
she could have been harshening
we could have been harshening
you could have been harshening
they could have been harshening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't harshen
you couldn't harshen
she couldn't harshen
we couldn't harshen
you couldn't harshen
they couldn't harshen 	I couldn't be harshening
you couldn't be harshening
she couldn't be harshening
we couldn't be harshening
you couldn't be harshening
they couldn't be harshening	I couldn't have harshened
you couldn't have harshened
she couldn't have harshened
we couldn't have harshened
you couldn't have harshened
they couldn't have harshened	I couldn't have been harshening
you couldn't have been harshening
she couldn't have been harshening
we couldn't have been harshening
you couldn't have been harshening
they couldn't have been harshening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I harshen?
could you harshen?
could she harshen?
could we harshen?
could you harshen?
could they harshen? 	could I be harshening?
could you be harshening?
could she be harshening?
could we be harshening?
could you be harshening?
could they be harshening? 	could I have harshened?
could you have harshened?
could she have harshened?
could we have harshened?
could you have harshened?
could they have harshened? 	could I have been harshening?
could you have been harshening?
could she have been harshening?
could we have been harshening?
could you have been harshening?
could they have been harshening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I harshen?
couldn't you harshen?
couldn't she harshen?
couldn't we harshen?
couldn't you harshen?
couldn't they harshen? 	couldn't I be harshening?
couldn't you be harshening?
couldn't she be harshening?
couldn't we be harshening?
couldn't you be harshening?
couldn't they be harshening? 	couldn't I have harshened?
couldn't you have harshened?
couldn't she have harshened?
couldn't we have harshened?
couldn't you have harshened?
couldn't they have harshened? 	couldn't I have been harshening?
couldn't you have been harshening?
couldn't she have been harshening?
couldn't we have been harshening?
couldn't you have been harshening?
couldn't they have been harshening?