English verb conjugation
MUST RETAIL

Regular verb: retail - retailed - retailed

Affirmation

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

Negation

Simple form	V-ing form
I mustn't retail you mustn't retail he mustn't retail we mustn't retail you mustn't retail they mustn't retail	I mustn't be retailing you mustn't be retailing he mustn't be retailing we mustn't be retailing you mustn't be retailing they mustn't be retailing
Perfect	V-ing perfect
I mustn't have retailed you mustn't have retailed he mustn't have retailed we mustn't have retailed you mustn't have retailed they mustn't have retailed	I mustn't have been retailing you mustn't have been retailing he mustn't have been retailing we mustn't have been retailing you mustn't have been retailing they mustn't have been retailing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I retail? mustn't you retail? mustn't he retail? mustn't we retail? mustn't you retail? mustn't they retail?	mustn't I be retailing? mustn't you be retailing? mustn't he be retailing? mustn't we be retailing? mustn't you be retailing? mustn't they be retailing?
Perfect	V-ing perfect
mustn't I have retailed? mustn't you have retailed? mustn't he have retailed? mustn't we have retailed? mustn't you have retailed? mustn't they have retailed?	mustn't I have been retailing? mustn't you have been retailing? mustn't he have been retailing? mustn't we have been retailing? mustn't you have been retailing? mustn't they have been retailing?