could harshen
Verbo regular: harshen - harshened- harshened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not harshen
you could not harshen
she 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
she 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
she 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
she could not have been harshening
we could not have been harshening
you could not have been harshening
they could not have been harshening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not harshen?
could you not harshen?
could she 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 she 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 she 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 she not have been harshening?
could we not have been harshening?
could you not have been harshening?
could they not have been harshening?