could roughen
Verbo regolare: roughen - roughened- roughened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could roughen
you could roughen
he could roughen
we could roughen
you could roughen
they could roughen 	I could be roughening
you could be roughening
he could be roughening
we could be roughening
you could be roughening
they could be roughening	I could have roughened
you could have roughened
he could have roughened
we could have roughened
you could have roughened
they could have roughened	I could have been roughening
you could have been roughening
he could have been roughening
we could have been roughening
you could have been roughening
they could have been roughening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't roughen
you couldn't roughen
he couldn't roughen
we couldn't roughen
you couldn't roughen
they couldn't roughen 	I couldn't be roughening
you couldn't be roughening
he couldn't be roughening
we couldn't be roughening
you couldn't be roughening
they couldn't be roughening	I couldn't have roughened
you couldn't have roughened
he couldn't have roughened
we couldn't have roughened
you couldn't have roughened
they couldn't have roughened	I couldn't have been roughening
you couldn't have been roughening
he couldn't have been roughening
we couldn't have been roughening
you couldn't have been roughening
they couldn't have been roughening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I roughen?
could you roughen?
could he roughen?
could we roughen?
could you roughen?
could they roughen? 	could I be roughening?
could you be roughening?
could he be roughening?
could we be roughening?
could you be roughening?
could they be roughening? 	could I have roughened?
could you have roughened?
could he have roughened?
could we have roughened?
could you have roughened?
could they have roughened? 	could I have been roughening?
could you have been roughening?
could he have been roughening?
could we have been roughening?
could you have been roughening?
could they have been roughening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I roughen?
couldn't you roughen?
couldn't he roughen?
couldn't we roughen?
couldn't you roughen?
couldn't they roughen? 	couldn't I be roughening?
couldn't you be roughening?
couldn't he be roughening?
couldn't we be roughening?
couldn't you be roughening?
couldn't they be roughening? 	couldn't I have roughened?
couldn't you have roughened?
couldn't he have roughened?
couldn't we have roughened?
couldn't you have roughened?
couldn't they have roughened? 	couldn't I have been roughening?
couldn't you have been roughening?
couldn't he have been roughening?
couldn't we have been roughening?
couldn't you have been roughening?
couldn't they have been roughening?