should shudder
Regular verb: shudder - shuddered- shuddered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd shudder
you'd shudder
he'd shudder
we'd shudder
you'd shudder
they'd shudder 	I'd be shuddering
you'd be shuddering
he'd be shuddering
we'd be shuddering
you'd be shuddering
they'd be shuddering	I should've shuddered
you should've shuddered
he should've shuddered
we should've shuddered
you should've shuddered
they should've shuddered	I should've been shuddering
you should've been shuddering
he should've been shuddering
we should've been shuddering
you should've been shuddering
they should've been shuddering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't shudder
you shouldn't shudder
he shouldn't shudder
we shouldn't shudder
you shouldn't shudder
they shouldn't shudder 	I shouldn't be shuddering
you shouldn't be shuddering
he shouldn't be shuddering
we shouldn't be shuddering
you shouldn't be shuddering
they shouldn't be shuddering	I shouldn't have shuddered
you shouldn't have shuddered
he shouldn't have shuddered
we shouldn't have shuddered
you shouldn't have shuddered
they shouldn't have shuddered	I shouldn't have been shuddering
you shouldn't have been shuddering
he shouldn't have been shuddering
we shouldn't have been shuddering
you shouldn't have been shuddering
they shouldn't have been shuddering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I shudder?
should you shudder?
should he shudder?
should we shudder?
should you shudder?
should they shudder? 	should I be shuddering?
should you be shuddering?
should he be shuddering?
should we be shuddering?
should you be shuddering?
should they be shuddering? 	should I have shuddered?
should you have shuddered?
should he have shuddered?
should we have shuddered?
should you have shuddered?
should they have shuddered? 	should I have been shuddering?
should you have been shuddering?
should he have been shuddering?
should we have been shuddering?
should you have been shuddering?
should they have been shuddering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I shudder?
shouldn't you shudder?
shouldn't he shudder?
shouldn't we shudder?
shouldn't you shudder?
shouldn't they shudder? 	shouldn't I be shuddering?
shouldn't you be shuddering?
shouldn't he be shuddering?
shouldn't we be shuddering?
shouldn't you be shuddering?
shouldn't they be shuddering? 	shouldn't I have shuddered?
shouldn't you have shuddered?
shouldn't he have shuddered?
shouldn't we have shuddered?
shouldn't you have shuddered?
shouldn't they have shuddered? 	shouldn't I have been shuddering?
shouldn't you have been shuddering?
shouldn't he have been shuddering?
shouldn't we have been shuddering?
shouldn't you have been shuddering?
shouldn't they have been shuddering?