should zero
Verbo regular: zero - zeroed- zeroed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd zero
you'd zero
he'd zero
we'd zero
you'd zero
they'd zero 	I'd be zeroing
you'd be zeroing
he'd be zeroing
we'd be zeroing
you'd be zeroing
they'd be zeroing	I should've zeroed
you should've zeroed
he should've zeroed
we should've zeroed
you should've zeroed
they should've zeroed	I should've been zeroing
you should've been zeroing
he should've been zeroing
we should've been zeroing
you should've been zeroing
they should've been zeroing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't zero
you shouldn't zero
he shouldn't zero
we shouldn't zero
you shouldn't zero
they shouldn't zero 	I shouldn't be zeroing
you shouldn't be zeroing
he shouldn't be zeroing
we shouldn't be zeroing
you shouldn't be zeroing
they shouldn't be zeroing	I shouldn't have zeroed
you shouldn't have zeroed
he shouldn't have zeroed
we shouldn't have zeroed
you shouldn't have zeroed
they shouldn't have zeroed	I shouldn't have been zeroing
you shouldn't have been zeroing
he shouldn't have been zeroing
we shouldn't have been zeroing
you shouldn't have been zeroing
they shouldn't have been zeroing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I zero?
should you zero?
should he zero?
should we zero?
should you zero?
should they zero? 	should I be zeroing?
should you be zeroing?
should he be zeroing?
should we be zeroing?
should you be zeroing?
should they be zeroing? 	should I have zeroed?
should you have zeroed?
should he have zeroed?
should we have zeroed?
should you have zeroed?
should they have zeroed? 	should I have been zeroing?
should you have been zeroing?
should he have been zeroing?
should we have been zeroing?
should you have been zeroing?
should they have been zeroing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I zero?
shouldn't you zero?
shouldn't he zero?
shouldn't we zero?
shouldn't you zero?
shouldn't they zero? 	shouldn't I be zeroing?
shouldn't you be zeroing?
shouldn't he be zeroing?
shouldn't we be zeroing?
shouldn't you be zeroing?
shouldn't they be zeroing? 	shouldn't I have zeroed?
shouldn't you have zeroed?
shouldn't he have zeroed?
shouldn't we have zeroed?
shouldn't you have zeroed?
shouldn't they have zeroed? 	shouldn't I have been zeroing?
shouldn't you have been zeroing?
shouldn't he have been zeroing?
shouldn't we have been zeroing?
shouldn't you have been zeroing?
shouldn't they have been zeroing?