could circularize
Verbo regular: circularize - circularized- circularized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could circularize
you could circularize
he could circularize
we could circularize
you could circularize
they could circularize 	I could be circularizing
you could be circularizing
he could be circularizing
we could be circularizing
you could be circularizing
they could be circularizing	I could have circularized
you could have circularized
he could have circularized
we could have circularized
you could have circularized
they could have circularized	I could have been circularizing
you could have been circularizing
he could have been circularizing
we could have been circularizing
you could have been circularizing
they could have been circularizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't circularize
you couldn't circularize
he couldn't circularize
we couldn't circularize
you couldn't circularize
they couldn't circularize 	I couldn't be circularizing
you couldn't be circularizing
he couldn't be circularizing
we couldn't be circularizing
you couldn't be circularizing
they couldn't be circularizing	I couldn't have circularized
you couldn't have circularized
he couldn't have circularized
we couldn't have circularized
you couldn't have circularized
they couldn't have circularized	I couldn't have been circularizing
you couldn't have been circularizing
he couldn't have been circularizing
we couldn't have been circularizing
you couldn't have been circularizing
they couldn't have been circularizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I circularize?
could you circularize?
could he circularize?
could we circularize?
could you circularize?
could they circularize? 	could I be circularizing?
could you be circularizing?
could he be circularizing?
could we be circularizing?
could you be circularizing?
could they be circularizing? 	could I have circularized?
could you have circularized?
could he have circularized?
could we have circularized?
could you have circularized?
could they have circularized? 	could I have been circularizing?
could you have been circularizing?
could he have been circularizing?
could we have been circularizing?
could you have been circularizing?
could they have been circularizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I circularize?
couldn't you circularize?
couldn't he circularize?
couldn't we circularize?
couldn't you circularize?
couldn't they circularize? 	couldn't I be circularizing?
couldn't you be circularizing?
couldn't he be circularizing?
couldn't we be circularizing?
couldn't you be circularizing?
couldn't they be circularizing? 	couldn't I have circularized?
couldn't you have circularized?
couldn't he have circularized?
couldn't we have circularized?
couldn't you have circularized?
couldn't they have circularized? 	couldn't I have been circularizing?
couldn't you have been circularizing?
couldn't he have been circularizing?
couldn't we have been circularizing?
couldn't you have been circularizing?
couldn't they have been circularizing?