should stain
Verbo regular: stain - stained- stained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd stain
you'd stain
she'd stain
we'd stain
you'd stain
they'd stain 	I'd be staining
you'd be staining
she'd be staining
we'd be staining
you'd be staining
they'd be staining	I should've stained
you should've stained
she should've stained
we should've stained
you should've stained
they should've stained	I should've been staining
you should've been staining
she should've been staining
we should've been staining
you should've been staining
they should've been staining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't stain
you shouldn't stain
she shouldn't stain
we shouldn't stain
you shouldn't stain
they shouldn't stain 	I shouldn't be staining
you shouldn't be staining
she shouldn't be staining
we shouldn't be staining
you shouldn't be staining
they shouldn't be staining	I shouldn't have stained
you shouldn't have stained
she shouldn't have stained
we shouldn't have stained
you shouldn't have stained
they shouldn't have stained	I shouldn't have been staining
you shouldn't have been staining
she shouldn't have been staining
we shouldn't have been staining
you shouldn't have been staining
they shouldn't have been staining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I stain?
should you stain?
should she stain?
should we stain?
should you stain?
should they stain? 	should I be staining?
should you be staining?
should she be staining?
should we be staining?
should you be staining?
should they be staining? 	should I have stained?
should you have stained?
should she have stained?
should we have stained?
should you have stained?
should they have stained? 	should I have been staining?
should you have been staining?
should she have been staining?
should we have been staining?
should you have been staining?
should they have been staining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I stain?
shouldn't you stain?
shouldn't she stain?
shouldn't we stain?
shouldn't you stain?
shouldn't they stain? 	shouldn't I be staining?
shouldn't you be staining?
shouldn't she be staining?
shouldn't we be staining?
shouldn't you be staining?
shouldn't they be staining? 	shouldn't I have stained?
shouldn't you have stained?
shouldn't she have stained?
shouldn't we have stained?
shouldn't you have stained?
shouldn't they have stained? 	shouldn't I have been staining?
shouldn't you have been staining?
shouldn't she have been staining?
shouldn't we have been staining?
shouldn't you have been staining?
shouldn't they have been staining?