should hammer
Regular verb: hammer - hammered- hammered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd hammer
you'd hammer
he'd hammer
we'd hammer
you'd hammer
they'd hammer 	I'd be hammering
you'd be hammering
he'd be hammering
we'd be hammering
you'd be hammering
they'd be hammering	I should've hammered
you should've hammered
he should've hammered
we should've hammered
you should've hammered
they should've hammered	I should've been hammering
you should've been hammering
he should've been hammering
we should've been hammering
you should've been hammering
they should've been hammering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't hammer
you shouldn't hammer
he shouldn't hammer
we shouldn't hammer
you shouldn't hammer
they shouldn't hammer 	I shouldn't be hammering
you shouldn't be hammering
he shouldn't be hammering
we shouldn't be hammering
you shouldn't be hammering
they shouldn't be hammering	I shouldn't have hammered
you shouldn't have hammered
he shouldn't have hammered
we shouldn't have hammered
you shouldn't have hammered
they shouldn't have hammered	I shouldn't have been hammering
you shouldn't have been hammering
he shouldn't have been hammering
we shouldn't have been hammering
you shouldn't have been hammering
they shouldn't have been hammering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I hammer?
should you hammer?
should he hammer?
should we hammer?
should you hammer?
should they hammer? 	should I be hammering?
should you be hammering?
should he be hammering?
should we be hammering?
should you be hammering?
should they be hammering? 	should I have hammered?
should you have hammered?
should he have hammered?
should we have hammered?
should you have hammered?
should they have hammered? 	should I have been hammering?
should you have been hammering?
should he have been hammering?
should we have been hammering?
should you have been hammering?
should they have been hammering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I hammer?
shouldn't you hammer?
shouldn't he hammer?
shouldn't we hammer?
shouldn't you hammer?
shouldn't they hammer? 	shouldn't I be hammering?
shouldn't you be hammering?
shouldn't he be hammering?
shouldn't we be hammering?
shouldn't you be hammering?
shouldn't they be hammering? 	shouldn't I have hammered?
shouldn't you have hammered?
shouldn't he have hammered?
shouldn't we have hammered?
shouldn't you have hammered?
shouldn't they have hammered? 	shouldn't I have been hammering?
shouldn't you have been hammering?
shouldn't he have been hammering?
shouldn't we have been hammering?
shouldn't you have been hammering?
shouldn't they have been hammering?