English verb conjugation
COULD EMAIL

Regular verb: email - emailed - emailed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I could not email you could not email he could not email we could not email you could not email they could not email	I could not be emailing you could not be emailing he could not be emailing we could not be emailing you could not be emailing they could not be emailing
Perfect	V-ing perfect
I could not have emailed you could not have emailed he could not have emailed we could not have emailed you could not have emailed they could not have emailed	I could not have been emailing you could not have been emailing he could not have been emailing we could not have been emailing you could not have been emailing they could not have been emailing

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
could I not email? could you not email? could he not email? could we not email? could you not email? could they not email?	could I not be emailing? could you not be emailing? could he not be emailing? could we not be emailing? could you not be emailing? could they not be emailing?
Perfect	V-ing perfect
could I not have emailed? could you not have emailed? could he not have emailed? could we not have emailed? could you not have emailed? could they not have emailed?	could I not have been emailing? could you not have been emailing? could he not have been emailing? could we not have been emailing? could you not have been emailing? could they not have been emailing?