should undervalue
Verbo regular: undervalue - undervalued- undervalued

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd undervalue
you'd undervalue
she'd undervalue
we'd undervalue
you'd undervalue
they'd undervalue 	I'd be undervaluing
you'd be undervaluing
she'd be undervaluing
we'd be undervaluing
you'd be undervaluing
they'd be undervaluing	I should've undervalued
you should've undervalued
she should've undervalued
we should've undervalued
you should've undervalued
they should've undervalued	I should've been undervaluing
you should've been undervaluing
she should've been undervaluing
we should've been undervaluing
you should've been undervaluing
they should've been undervaluing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't undervalue
you shouldn't undervalue
she shouldn't undervalue
we shouldn't undervalue
you shouldn't undervalue
they shouldn't undervalue 	I shouldn't be undervaluing
you shouldn't be undervaluing
she shouldn't be undervaluing
we shouldn't be undervaluing
you shouldn't be undervaluing
they shouldn't be undervaluing	I shouldn't have undervalued
you shouldn't have undervalued
she shouldn't have undervalued
we shouldn't have undervalued
you shouldn't have undervalued
they shouldn't have undervalued	I shouldn't have been undervaluing
you shouldn't have been undervaluing
she shouldn't have been undervaluing
we shouldn't have been undervaluing
you shouldn't have been undervaluing
they shouldn't have been undervaluing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I undervalue?
should you undervalue?
should she undervalue?
should we undervalue?
should you undervalue?
should they undervalue? 	should I be undervaluing?
should you be undervaluing?
should she be undervaluing?
should we be undervaluing?
should you be undervaluing?
should they be undervaluing? 	should I have undervalued?
should you have undervalued?
should she have undervalued?
should we have undervalued?
should you have undervalued?
should they have undervalued? 	should I have been undervaluing?
should you have been undervaluing?
should she have been undervaluing?
should we have been undervaluing?
should you have been undervaluing?
should they have been undervaluing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I undervalue?
shouldn't you undervalue?
shouldn't she undervalue?
shouldn't we undervalue?
shouldn't you undervalue?
shouldn't they undervalue? 	shouldn't I be undervaluing?
shouldn't you be undervaluing?
shouldn't she be undervaluing?
shouldn't we be undervaluing?
shouldn't you be undervaluing?
shouldn't they be undervaluing? 	shouldn't I have undervalued?
shouldn't you have undervalued?
shouldn't she have undervalued?
shouldn't we have undervalued?
shouldn't you have undervalued?
shouldn't they have undervalued? 	shouldn't I have been undervaluing?
shouldn't you have been undervaluing?
shouldn't she have been undervaluing?
shouldn't we have been undervaluing?
shouldn't you have been undervaluing?
shouldn't they have been undervaluing?