should prealter
Verbo regular: prealter - prealtered- prealtered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should prealter
you should prealter
he should prealter
we should prealter
you should prealter
they should prealter 	I should be prealtering
you should be prealtering
he should be prealtering
we should be prealtering
you should be prealtering
they should be prealtering	I should have prealtered
you should have prealtered
he should have prealtered
we should have prealtered
you should have prealtered
they should have prealtered	I should have been prealtering
you should have been prealtering
he should have been prealtering
we should have been prealtering
you should have been prealtering
they should have been prealtering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not prealter
you should not prealter
he should not prealter
we should not prealter
you should not prealter
they should not prealter 	I should not be prealtering
you should not be prealtering
he should not be prealtering
we should not be prealtering
you should not be prealtering
they should not be prealtering	I should not have prealtered
you should not have prealtered
he should not have prealtered
we should not have prealtered
you should not have prealtered
they should not have prealtered	I should not have been prealtering
you should not have been prealtering
he should not have been prealtering
we should not have been prealtering
you should not have been prealtering
they should not have been prealtering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I prealter?
should you prealter?
should he prealter?
should we prealter?
should you prealter?
should they prealter? 	should I be prealtering?
should you be prealtering?
should he be prealtering?
should we be prealtering?
should you be prealtering?
should they be prealtering? 	should I have prealtered?
should you have prealtered?
should he have prealtered?
should we have prealtered?
should you have prealtered?
should they have prealtered? 	should I have been prealtering?
should you have been prealtering?
should he have been prealtering?
should we have been prealtering?
should you have been prealtering?
should they have been prealtering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not prealter?
should you not prealter?
should he not prealter?
should we not prealter?
should you not prealter?
should they not prealter? 	should I not be prealtering?
should you not be prealtering?
should he not be prealtering?
should we not be prealtering?
should you not be prealtering?
should they not be prealtering? 	should I not have prealtered?
should you not have prealtered?
should he not have prealtered?
should we not have prealtered?
should you not have prealtered?
should they not have prealtered? 	should I not have been prealtering?
should you not have been prealtering?
should he not have been prealtering?
should we not have been prealtering?
should you not have been prealtering?
should they not have been prealtering?