English verb conjugation
COULD E-MAIL

Regular verb: e-mail - e-mailed - e-mailed

Affirmation

Simple form	V-ing form
I could e-mail you could e-mail he could e-mail we could e-mail you could e-mail they could e-mail	I could be e-mailing you could be e-mailing he could be e-mailing we could be e-mailing you could be e-mailing they could be e-mailing
Perfect	V-ing perfect
I could have e-mailed you could have e-mailed he could have e-mailed we could have e-mailed you could have e-mailed they could have e-mailed	I could have been e-mailing you could have been e-mailing he could have been e-mailing we could have been e-mailing you could have been e-mailing they could have been e-mailing

Negation

Simple form	V-ing form
I could not e-mail you could not e-mail he could not e-mail we could not e-mail you could not e-mail they could not e-mail	I could not be e-mailing you could not be e-mailing he could not be e-mailing we could not be e-mailing you could not be e-mailing they could not be e-mailing
Perfect	V-ing perfect
I could not have e-mailed you could not have e-mailed he could not have e-mailed we could not have e-mailed you could not have e-mailed they could not have e-mailed	I could not have been e-mailing you could not have been e-mailing he could not have been e-mailing we could not have been e-mailing you could not have been e-mailing they could not have been e-mailing

Interrogative form

Simple form	V-ing form
could I e-mail? could you e-mail? could he e-mail? could we e-mail? could you e-mail? could they e-mail?	could I be e-mailing? could you be e-mailing? could he be e-mailing? could we be e-mailing? could you be e-mailing? could they be e-mailing?
Perfect	V-ing perfect
could I have e-mailed? could you have e-mailed? could he have e-mailed? could we have e-mailed? could you have e-mailed? could they have e-mailed?	could I have been e-mailing? could you have been e-mailing? could he have been e-mailing? could we have been e-mailing? could you have been e-mailing? could they have been e-mailing?

Interro-negative form

Simple form	V-ing form
could I not e-mail? could you not e-mail? could he not e-mail? could we not e-mail? could you not e-mail? could they not e-mail?	could I not be e-mailing? could you not be e-mailing? could he not be e-mailing? could we not be e-mailing? could you not be e-mailing? could they not be e-mailing?
Perfect	V-ing perfect
could I not have e-mailed? could you not have e-mailed? could he not have e-mailed? could we not have e-mailed? could you not have e-mailed? could they not have e-mailed?	could I not have been e-mailing? could you not have been e-mailing? could he not have been e-mailing? could we not have been e-mailing? could you not have been e-mailing? could they not have been e-mailing?