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
he could harshen
we could harshen
you could harshen
they could harshen 	I could be harshening
you could be harshening
he could be harshening
we could be harshening
you could be harshening
they could be harshening	I could have harshened
you could have harshened
he 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
he 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 could not harshen
you could not harshen
he could not harshen
we could not harshen
you could not harshen
they could not harshen 	I could not be harshening
you could not be harshening
he could not be harshening
we could not be harshening
you could not be harshening
they could not be harshening	I could not have harshened
you could not have harshened
he could not have harshened
we could not have harshened
you could not have harshened
they could not have harshened	I could not have been harshening
you could not have been harshening
he could not have been harshening
we could not have been harshening
you could not have been harshening
they could not have been harshening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I harshen?
could you harshen?
could he harshen?
could we harshen?
could you harshen?
could they harshen? 	could I be harshening?
could you be harshening?
could he be harshening?
could we be harshening?
could you be harshening?
could they be harshening? 	could I have harshened?
could you have harshened?
could he 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 he 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 	
could I not harshen?
could you not harshen?
could he not harshen?
could we not harshen?
could you not harshen?
could they not harshen? 	could I not be harshening?
could you not be harshening?
could he not be harshening?
could we not be harshening?
could you not be harshening?
could they not be harshening? 	could I not have harshened?
could you not have harshened?
could he not have harshened?
could we not have harshened?
could you not have harshened?
could they not have harshened? 	could I not have been harshening?
could you not have been harshening?
could he not have been harshening?
could we not have been harshening?
could you not have been harshening?
could they not have been harshening?