should couple
Regular verb: couple - coupled- coupled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd couple
you'd couple
she'd couple
we'd couple
you'd couple
they'd couple 	I'd be coupling
you'd be coupling
she'd be coupling
we'd be coupling
you'd be coupling
they'd be coupling	I should've coupled
you should've coupled
she should've coupled
we should've coupled
you should've coupled
they should've coupled	I should've been coupling
you should've been coupling
she should've been coupling
we should've been coupling
you should've been coupling
they should've been coupling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't couple
you shouldn't couple
she shouldn't couple
we shouldn't couple
you shouldn't couple
they shouldn't couple 	I shouldn't be coupling
you shouldn't be coupling
she shouldn't be coupling
we shouldn't be coupling
you shouldn't be coupling
they shouldn't be coupling	I shouldn't have coupled
you shouldn't have coupled
she shouldn't have coupled
we shouldn't have coupled
you shouldn't have coupled
they shouldn't have coupled	I shouldn't have been coupling
you shouldn't have been coupling
she shouldn't have been coupling
we shouldn't have been coupling
you shouldn't have been coupling
they shouldn't have been coupling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I couple?
should you couple?
should she couple?
should we couple?
should you couple?
should they couple? 	should I be coupling?
should you be coupling?
should she be coupling?
should we be coupling?
should you be coupling?
should they be coupling? 	should I have coupled?
should you have coupled?
should she have coupled?
should we have coupled?
should you have coupled?
should they have coupled? 	should I have been coupling?
should you have been coupling?
should she have been coupling?
should we have been coupling?
should you have been coupling?
should they have been coupling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I couple?
shouldn't you couple?
shouldn't she couple?
shouldn't we couple?
shouldn't you couple?
shouldn't they couple? 	shouldn't I be coupling?
shouldn't you be coupling?
shouldn't she be coupling?
shouldn't we be coupling?
shouldn't you be coupling?
shouldn't they be coupling? 	shouldn't I have coupled?
shouldn't you have coupled?
shouldn't she have coupled?
shouldn't we have coupled?
shouldn't you have coupled?
shouldn't they have coupled? 	shouldn't I have been coupling?
shouldn't you have been coupling?
shouldn't she have been coupling?
shouldn't we have been coupling?
shouldn't you have been coupling?
shouldn't they have been coupling?