should stem
Verbo regular: stem - stemmed- stemmed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd stem
you'd stem
she'd stem
we'd stem
you'd stem
they'd stem 	I'd be stemming
you'd be stemming
she'd be stemming
we'd be stemming
you'd be stemming
they'd be stemming	I should've stemmed
you should've stemmed
she should've stemmed
we should've stemmed
you should've stemmed
they should've stemmed	I should've been stemming
you should've been stemming
she should've been stemming
we should've been stemming
you should've been stemming
they should've been stemming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't stem
you shouldn't stem
she shouldn't stem
we shouldn't stem
you shouldn't stem
they shouldn't stem 	I shouldn't be stemming
you shouldn't be stemming
she shouldn't be stemming
we shouldn't be stemming
you shouldn't be stemming
they shouldn't be stemming	I shouldn't have stemmed
you shouldn't have stemmed
she shouldn't have stemmed
we shouldn't have stemmed
you shouldn't have stemmed
they shouldn't have stemmed	I shouldn't have been stemming
you shouldn't have been stemming
she shouldn't have been stemming
we shouldn't have been stemming
you shouldn't have been stemming
they shouldn't have been stemming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I stem?
should you stem?
should she stem?
should we stem?
should you stem?
should they stem? 	should I be stemming?
should you be stemming?
should she be stemming?
should we be stemming?
should you be stemming?
should they be stemming? 	should I have stemmed?
should you have stemmed?
should she have stemmed?
should we have stemmed?
should you have stemmed?
should they have stemmed? 	should I have been stemming?
should you have been stemming?
should she have been stemming?
should we have been stemming?
should you have been stemming?
should they have been stemming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I stem?
shouldn't you stem?
shouldn't she stem?
shouldn't we stem?
shouldn't you stem?
shouldn't they stem? 	shouldn't I be stemming?
shouldn't you be stemming?
shouldn't she be stemming?
shouldn't we be stemming?
shouldn't you be stemming?
shouldn't they be stemming? 	shouldn't I have stemmed?
shouldn't you have stemmed?
shouldn't she have stemmed?
shouldn't we have stemmed?
shouldn't you have stemmed?
shouldn't they have stemmed? 	shouldn't I have been stemming?
shouldn't you have been stemming?
shouldn't she have been stemming?
shouldn't we have been stemming?
shouldn't you have been stemming?
shouldn't they have been stemming?