should retail
Regular verb: retail - retailed- retailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd retail
you'd retail
she'd retail
we'd retail
you'd retail
they'd retail 	I'd be retailing
you'd be retailing
she'd be retailing
we'd be retailing
you'd be retailing
they'd be retailing	I should've retailed
you should've retailed
she should've retailed
we should've retailed
you should've retailed
they should've retailed	I should've been retailing
you should've been retailing
she should've been retailing
we should've been retailing
you should've been retailing
they should've been retailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't retail
you shouldn't retail
she shouldn't retail
we shouldn't retail
you shouldn't retail
they shouldn't retail 	I shouldn't be retailing
you shouldn't be retailing
she shouldn't be retailing
we shouldn't be retailing
you shouldn't be retailing
they shouldn't be retailing	I shouldn't have retailed
you shouldn't have retailed
she shouldn't have retailed
we shouldn't have retailed
you shouldn't have retailed
they shouldn't have retailed	I shouldn't have been retailing
you shouldn't have been retailing
she shouldn't have been retailing
we shouldn't have been retailing
you shouldn't have been retailing
they shouldn't have been retailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I retail?
should you retail?
should she retail?
should we retail?
should you retail?
should they retail? 	should I be retailing?
should you be retailing?
should she be retailing?
should we be retailing?
should you be retailing?
should they be retailing? 	should I have retailed?
should you have retailed?
should she 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 she 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 	Perfect 	V-ing perfect 	
shouldn't I retail?
shouldn't you retail?
shouldn't she retail?
shouldn't we retail?
shouldn't you retail?
shouldn't they retail? 	shouldn't I be retailing?
shouldn't you be retailing?
shouldn't she be retailing?
shouldn't we be retailing?
shouldn't you be retailing?
shouldn't they be retailing? 	shouldn't I have retailed?
shouldn't you have retailed?
shouldn't she have retailed?
shouldn't we have retailed?
shouldn't you have retailed?
shouldn't they have retailed? 	shouldn't I have been retailing?
shouldn't you have been retailing?
shouldn't she have been retailing?
shouldn't we have been retailing?
shouldn't you have been retailing?
shouldn't they have been retailing?