should lower
Regular verb: lower - lowered- lowered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd lower
you'd lower
she'd lower
we'd lower
you'd lower
they'd lower 	I'd be lowering
you'd be lowering
she'd be lowering
we'd be lowering
you'd be lowering
they'd be lowering	I should've lowered
you should've lowered
she should've lowered
we should've lowered
you should've lowered
they should've lowered	I should've been lowering
you should've been lowering
she should've been lowering
we should've been lowering
you should've been lowering
they should've been lowering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't lower
you shouldn't lower
she shouldn't lower
we shouldn't lower
you shouldn't lower
they shouldn't lower 	I shouldn't be lowering
you shouldn't be lowering
she shouldn't be lowering
we shouldn't be lowering
you shouldn't be lowering
they shouldn't be lowering	I shouldn't have lowered
you shouldn't have lowered
she shouldn't have lowered
we shouldn't have lowered
you shouldn't have lowered
they shouldn't have lowered	I shouldn't have been lowering
you shouldn't have been lowering
she shouldn't have been lowering
we shouldn't have been lowering
you shouldn't have been lowering
they shouldn't have been lowering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I lower?
should you lower?
should she lower?
should we lower?
should you lower?
should they lower? 	should I be lowering?
should you be lowering?
should she be lowering?
should we be lowering?
should you be lowering?
should they be lowering? 	should I have lowered?
should you have lowered?
should she have lowered?
should we have lowered?
should you have lowered?
should they have lowered? 	should I have been lowering?
should you have been lowering?
should she have been lowering?
should we have been lowering?
should you have been lowering?
should they have been lowering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I lower?
shouldn't you lower?
shouldn't she lower?
shouldn't we lower?
shouldn't you lower?
shouldn't they lower? 	shouldn't I be lowering?
shouldn't you be lowering?
shouldn't she be lowering?
shouldn't we be lowering?
shouldn't you be lowering?
shouldn't they be lowering? 	shouldn't I have lowered?
shouldn't you have lowered?
shouldn't she have lowered?
shouldn't we have lowered?
shouldn't you have lowered?
shouldn't they have lowered? 	shouldn't I have been lowering?
shouldn't you have been lowering?
shouldn't she have been lowering?
shouldn't we have been lowering?
shouldn't you have been lowering?
shouldn't they have been lowering?