could email
Verbo regular: email - emailed- emailed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could email
you could email
he could email
we could email
you could email
they could email 	I could be emailing
you could be emailing
he could be emailing
we could be emailing
you could be emailing
they could be emailing	I could have emailed
you could have emailed
he could have emailed
we could have emailed
you could have emailed
they could have emailed	I could have been emailing
you could have been emailing
he could have been emailing
we could have been emailing
you could have been emailing
they could have been emailing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't email
you couldn't email
he couldn't email
we couldn't email
you couldn't email
they couldn't email 	I couldn't be emailing
you couldn't be emailing
he couldn't be emailing
we couldn't be emailing
you couldn't be emailing
they couldn't be emailing	I couldn't have emailed
you couldn't have emailed
he couldn't have emailed
we couldn't have emailed
you couldn't have emailed
they couldn't have emailed	I couldn't have been emailing
you couldn't have been emailing
he couldn't have been emailing
we couldn't have been emailing
you couldn't have been emailing
they couldn't have been emailing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I email?
could you email?
could he email?
could we email?
could you email?
could they email? 	could I be emailing?
could you be emailing?
could he be emailing?
could we be emailing?
could you be emailing?
could they be emailing? 	could I have emailed?
could you have emailed?
could he have emailed?
could we have emailed?
could you have emailed?
could they have emailed? 	could I have been emailing?
could you have been emailing?
could he have been emailing?
could we have been emailing?
could you have been emailing?
could they have been emailing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I email?
couldn't you email?
couldn't he email?
couldn't we email?
couldn't you email?
couldn't they email? 	couldn't I be emailing?
couldn't you be emailing?
couldn't he be emailing?
couldn't we be emailing?
couldn't you be emailing?
couldn't they be emailing? 	couldn't I have emailed?
couldn't you have emailed?
couldn't he have emailed?
couldn't we have emailed?
couldn't you have emailed?
couldn't they have emailed? 	couldn't I have been emailing?
couldn't you have been emailing?
couldn't he have been emailing?
couldn't we have been emailing?
couldn't you have been emailing?
couldn't they have been emailing?