should change
Verbo regular: change - changed- changed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd change
you'd change
she'd change
we'd change
you'd change
they'd change 	I'd be changing
you'd be changing
she'd be changing
we'd be changing
you'd be changing
they'd be changing	I should've changed
you should've changed
she should've changed
we should've changed
you should've changed
they should've changed	I should've been changing
you should've been changing
she should've been changing
we should've been changing
you should've been changing
they should've been changing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't change
you shouldn't change
she shouldn't change
we shouldn't change
you shouldn't change
they shouldn't change 	I shouldn't be changing
you shouldn't be changing
she shouldn't be changing
we shouldn't be changing
you shouldn't be changing
they shouldn't be changing	I shouldn't have changed
you shouldn't have changed
she shouldn't have changed
we shouldn't have changed
you shouldn't have changed
they shouldn't have changed	I shouldn't have been changing
you shouldn't have been changing
she shouldn't have been changing
we shouldn't have been changing
you shouldn't have been changing
they shouldn't have been changing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I change?
should you change?
should she change?
should we change?
should you change?
should they change? 	should I be changing?
should you be changing?
should she be changing?
should we be changing?
should you be changing?
should they be changing? 	should I have changed?
should you have changed?
should she have changed?
should we have changed?
should you have changed?
should they have changed? 	should I have been changing?
should you have been changing?
should she have been changing?
should we have been changing?
should you have been changing?
should they have been changing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I change?
shouldn't you change?
shouldn't she change?
shouldn't we change?
shouldn't you change?
shouldn't they change? 	shouldn't I be changing?
shouldn't you be changing?
shouldn't she be changing?
shouldn't we be changing?
shouldn't you be changing?
shouldn't they be changing? 	shouldn't I have changed?
shouldn't you have changed?
shouldn't she have changed?
shouldn't we have changed?
shouldn't you have changed?
shouldn't they have changed? 	shouldn't I have been changing?
shouldn't you have been changing?
shouldn't she have been changing?
shouldn't we have been changing?
shouldn't you have been changing?
shouldn't they have been changing?