should invalid
Verbo regular: invalid - invalided- invalided

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should invalid
you should invalid
she should invalid
we should invalid
you should invalid
they should invalid 	I should be invaliding
you should be invaliding
she should be invaliding
we should be invaliding
you should be invaliding
they should be invaliding	I should have invalided
you should have invalided
she should have invalided
we should have invalided
you should have invalided
they should have invalided	I should have been invaliding
you should have been invaliding
she should have been invaliding
we should have been invaliding
you should have been invaliding
they should have been invaliding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not invalid
you should not invalid
she should not invalid
we should not invalid
you should not invalid
they should not invalid 	I should not be invaliding
you should not be invaliding
she should not be invaliding
we should not be invaliding
you should not be invaliding
they should not be invaliding	I should not have invalided
you should not have invalided
she should not have invalided
we should not have invalided
you should not have invalided
they should not have invalided	I should not have been invaliding
you should not have been invaliding
she should not have been invaliding
we should not have been invaliding
you should not have been invaliding
they should not have been invaliding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I invalid?
should you invalid?
should she invalid?
should we invalid?
should you invalid?
should they invalid? 	should I be invaliding?
should you be invaliding?
should she be invaliding?
should we be invaliding?
should you be invaliding?
should they be invaliding? 	should I have invalided?
should you have invalided?
should she have invalided?
should we have invalided?
should you have invalided?
should they have invalided? 	should I have been invaliding?
should you have been invaliding?
should she have been invaliding?
should we have been invaliding?
should you have been invaliding?
should they have been invaliding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not invalid?
should you not invalid?
should she not invalid?
should we not invalid?
should you not invalid?
should they not invalid? 	should I not be invaliding?
should you not be invaliding?
should she not be invaliding?
should we not be invaliding?
should you not be invaliding?
should they not be invaliding? 	should I not have invalided?
should you not have invalided?
should she not have invalided?
should we not have invalided?
should you not have invalided?
should they not have invalided? 	should I not have been invaliding?
should you not have been invaliding?
should she not have been invaliding?
should we not have been invaliding?
should you not have been invaliding?
should they not have been invaliding?