should vary
Verbo regular: vary - varied- varied

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd vary
you'd vary
he'd vary
we'd vary
you'd vary
they'd vary 	I'd be varying
you'd be varying
he'd be varying
we'd be varying
you'd be varying
they'd be varying	I should've varied
you should've varied
he should've varied
we should've varied
you should've varied
they should've varied	I should've been varying
you should've been varying
he should've been varying
we should've been varying
you should've been varying
they should've been varying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't vary
you shouldn't vary
he shouldn't vary
we shouldn't vary
you shouldn't vary
they shouldn't vary 	I shouldn't be varying
you shouldn't be varying
he shouldn't be varying
we shouldn't be varying
you shouldn't be varying
they shouldn't be varying	I shouldn't have varied
you shouldn't have varied
he shouldn't have varied
we shouldn't have varied
you shouldn't have varied
they shouldn't have varied	I shouldn't have been varying
you shouldn't have been varying
he shouldn't have been varying
we shouldn't have been varying
you shouldn't have been varying
they shouldn't have been varying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I vary?
should you vary?
should he vary?
should we vary?
should you vary?
should they vary? 	should I be varying?
should you be varying?
should he be varying?
should we be varying?
should you be varying?
should they be varying? 	should I have varied?
should you have varied?
should he have varied?
should we have varied?
should you have varied?
should they have varied? 	should I have been varying?
should you have been varying?
should he have been varying?
should we have been varying?
should you have been varying?
should they have been varying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I vary?
shouldn't you vary?
shouldn't he vary?
shouldn't we vary?
shouldn't you vary?
shouldn't they vary? 	shouldn't I be varying?
shouldn't you be varying?
shouldn't he be varying?
shouldn't we be varying?
shouldn't you be varying?
shouldn't they be varying? 	shouldn't I have varied?
shouldn't you have varied?
shouldn't he have varied?
shouldn't we have varied?
shouldn't you have varied?
shouldn't they have varied? 	shouldn't I have been varying?
shouldn't you have been varying?
shouldn't he have been varying?
shouldn't we have been varying?
shouldn't you have been varying?
shouldn't they have been varying?