should button
Verbo regular: button - buttoned- buttoned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should button
you should button
she should button
we should button
you should button
they should button 	I should be buttoning
you should be buttoning
she should be buttoning
we should be buttoning
you should be buttoning
they should be buttoning	I should have buttoned
you should have buttoned
she should have buttoned
we should have buttoned
you should have buttoned
they should have buttoned	I should have been buttoning
you should have been buttoning
she should have been buttoning
we should have been buttoning
you should have been buttoning
they should have been buttoning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not button
you should not button
she should not button
we should not button
you should not button
they should not button 	I should not be buttoning
you should not be buttoning
she should not be buttoning
we should not be buttoning
you should not be buttoning
they should not be buttoning	I should not have buttoned
you should not have buttoned
she should not have buttoned
we should not have buttoned
you should not have buttoned
they should not have buttoned	I should not have been buttoning
you should not have been buttoning
she should not have been buttoning
we should not have been buttoning
you should not have been buttoning
they should not have been buttoning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I button?
should you button?
should she button?
should we button?
should you button?
should they button? 	should I be buttoning?
should you be buttoning?
should she be buttoning?
should we be buttoning?
should you be buttoning?
should they be buttoning? 	should I have buttoned?
should you have buttoned?
should she have buttoned?
should we have buttoned?
should you have buttoned?
should they have buttoned? 	should I have been buttoning?
should you have been buttoning?
should she have been buttoning?
should we have been buttoning?
should you have been buttoning?
should they have been buttoning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not button?
should you not button?
should she not button?
should we not button?
should you not button?
should they not button? 	should I not be buttoning?
should you not be buttoning?
should she not be buttoning?
should we not be buttoning?
should you not be buttoning?
should they not be buttoning? 	should I not have buttoned?
should you not have buttoned?
should she not have buttoned?
should we not have buttoned?
should you not have buttoned?
should they not have buttoned? 	should I not have been buttoning?
should you not have been buttoning?
should she not have been buttoning?
should we not have been buttoning?
should you not have been buttoning?
should they not have been buttoning?