should lower
Verbo regular: lower - lowered- lowered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should lower
you should lower
he should lower
we should lower
you should lower
they should lower 	I should be lowering
you should be lowering
he should be lowering
we should be lowering
you should be lowering
they should be lowering	I should have lowered
you should have lowered
he should have lowered
we should have lowered
you should have lowered
they should have lowered	I should have been lowering
you should have been lowering
he should have been lowering
we should have been lowering
you should have been lowering
they should have been lowering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not lower
you should not lower
he should not lower
we should not lower
you should not lower
they should not lower 	I should not be lowering
you should not be lowering
he should not be lowering
we should not be lowering
you should not be lowering
they should not be lowering	I should not have lowered
you should not have lowered
he should not have lowered
we should not have lowered
you should not have lowered
they should not have lowered	I should not have been lowering
you should not have been lowering
he should not have been lowering
we should not have been lowering
you should not have been lowering
they should not have been lowering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I lower?
should you lower?
should he lower?
should we lower?
should you lower?
should they lower? 	should I be lowering?
should you be lowering?
should he be lowering?
should we be lowering?
should you be lowering?
should they be lowering? 	should I have lowered?
should you have lowered?
should he 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 he have been lowering?
should we have been lowering?
should you have been lowering?
should they have been lowering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not lower?
should you not lower?
should he not lower?
should we not lower?
should you not lower?
should they not lower? 	should I not be lowering?
should you not be lowering?
should he not be lowering?
should we not be lowering?
should you not be lowering?
should they not be lowering? 	should I not have lowered?
should you not have lowered?
should he not have lowered?
should we not have lowered?
should you not have lowered?
should they not have lowered? 	should I not have been lowering?
should you not have been lowering?
should he not have been lowering?
should we not have been lowering?
should you not have been lowering?
should they not have been lowering?