should retail
Regular verb: retail - retailed- retailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd retail
you'd retail
he'd retail
we'd retail
you'd retail
they'd retail 	I'd be retailing
you'd be retailing
he'd be retailing
we'd be retailing
you'd be retailing
they'd be retailing	I should've retailed
you should've retailed
he 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
he 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
he 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
he 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
he 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
he 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 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? 	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 	Perfect 	V-ing perfect 	
shouldn't I retail?
shouldn't you retail?
shouldn't he 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 he 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 he 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 he have been retailing?
shouldn't we have been retailing?
shouldn't you have been retailing?
shouldn't they have been retailing?