English verb conjugation
SHOULD RETAIL

Regular verb: retail - retailed - retailed

Affirmation

Simple form	V-ing form
I should retail you should retail he should retail we should retail you should retail they should retail	I should be retailing you should be retailing he should be retailing we should be retailing you should be retailing they should be retailing
Perfect	V-ing perfect
I should have retailed you should have retailed he should have retailed we should have retailed you should have retailed they should have retailed	I should have been retailing you should have been retailing he should have been retailing we should have been retailing you should have been retailing they should have been retailing

Negation

Simple form	V-ing form
I should not retail you should not retail he should not retail we should not retail you should not retail they should not retail	I should not be retailing you should not be retailing he should not be retailing we should not be retailing you should not be retailing they should not be retailing
Perfect	V-ing perfect
I should not have retailed you should not have retailed he should not have retailed we should not have retailed you should not have retailed they should not have retailed	I should not have been retailing you should not have been retailing he should not have been retailing we should not have been retailing you should not have been retailing they should not have been retailing

Interrogative form

Simple form	V-ing form
should I retail? should you retail? should he retail? should we retail? should you retail? should they retail?	should I be retailing? should you be retailing? should he be retailing? should we be retailing? should you be retailing? should they be retailing?
Perfect	V-ing perfect
should I have retailed? should you have retailed? should he have retailed? should we have retailed? should you have retailed? should they have retailed?	should I have been retailing? should you have been retailing? should he have been retailing? should we have been retailing? should you have been retailing? should they have been retailing?

Interro-negative form

Simple form	V-ing form
should I not retail? should you not retail? should he not retail? should we not retail? should you not retail? should they not retail?	should I not be retailing? should you not be retailing? should he not be retailing? should we not be retailing? should you not be retailing? should they not be retailing?
Perfect	V-ing perfect
should I not have retailed? should you not have retailed? should he not have retailed? should we not have retailed? should you not have retailed? should they not have retailed?	should I not have been retailing? should you not have been retailing? should he not have been retailing? should we not have been retailing? should you not have been retailing? should they not have been retailing?