should stammer
Regular verb: stammer - stammered- stammered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd stammer
you'd stammer
she'd stammer
we'd stammer
you'd stammer
they'd stammer 	I'd be stammering
you'd be stammering
she'd be stammering
we'd be stammering
you'd be stammering
they'd be stammering	I should've stammered
you should've stammered
she should've stammered
we should've stammered
you should've stammered
they should've stammered	I should've been stammering
you should've been stammering
she should've been stammering
we should've been stammering
you should've been stammering
they should've been stammering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't stammer
you shouldn't stammer
she shouldn't stammer
we shouldn't stammer
you shouldn't stammer
they shouldn't stammer 	I shouldn't be stammering
you shouldn't be stammering
she shouldn't be stammering
we shouldn't be stammering
you shouldn't be stammering
they shouldn't be stammering	I shouldn't have stammered
you shouldn't have stammered
she shouldn't have stammered
we shouldn't have stammered
you shouldn't have stammered
they shouldn't have stammered	I shouldn't have been stammering
you shouldn't have been stammering
she shouldn't have been stammering
we shouldn't have been stammering
you shouldn't have been stammering
they shouldn't have been stammering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I stammer?
should you stammer?
should she stammer?
should we stammer?
should you stammer?
should they stammer? 	should I be stammering?
should you be stammering?
should she be stammering?
should we be stammering?
should you be stammering?
should they be stammering? 	should I have stammered?
should you have stammered?
should she have stammered?
should we have stammered?
should you have stammered?
should they have stammered? 	should I have been stammering?
should you have been stammering?
should she have been stammering?
should we have been stammering?
should you have been stammering?
should they have been stammering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I stammer?
shouldn't you stammer?
shouldn't she stammer?
shouldn't we stammer?
shouldn't you stammer?
shouldn't they stammer? 	shouldn't I be stammering?
shouldn't you be stammering?
shouldn't she be stammering?
shouldn't we be stammering?
shouldn't you be stammering?
shouldn't they be stammering? 	shouldn't I have stammered?
shouldn't you have stammered?
shouldn't she have stammered?
shouldn't we have stammered?
shouldn't you have stammered?
shouldn't they have stammered? 	shouldn't I have been stammering?
shouldn't you have been stammering?
shouldn't she have been stammering?
shouldn't we have been stammering?
shouldn't you have been stammering?
shouldn't they have been stammering?