should rub
Verbo regular: rub - rubbed- rubbed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should rub
you should rub
she should rub
we should rub
you should rub
they should rub 	I should be rubbing
you should be rubbing
she should be rubbing
we should be rubbing
you should be rubbing
they should be rubbing	I should have rubbed
you should have rubbed
she should have rubbed
we should have rubbed
you should have rubbed
they should have rubbed	I should have been rubbing
you should have been rubbing
she should have been rubbing
we should have been rubbing
you should have been rubbing
they should have been rubbing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not rub
you should not rub
she should not rub
we should not rub
you should not rub
they should not rub 	I should not be rubbing
you should not be rubbing
she should not be rubbing
we should not be rubbing
you should not be rubbing
they should not be rubbing	I should not have rubbed
you should not have rubbed
she should not have rubbed
we should not have rubbed
you should not have rubbed
they should not have rubbed	I should not have been rubbing
you should not have been rubbing
she should not have been rubbing
we should not have been rubbing
you should not have been rubbing
they should not have been rubbing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I rub?
should you rub?
should she rub?
should we rub?
should you rub?
should they rub? 	should I be rubbing?
should you be rubbing?
should she be rubbing?
should we be rubbing?
should you be rubbing?
should they be rubbing? 	should I have rubbed?
should you have rubbed?
should she have rubbed?
should we have rubbed?
should you have rubbed?
should they have rubbed? 	should I have been rubbing?
should you have been rubbing?
should she have been rubbing?
should we have been rubbing?
should you have been rubbing?
should they have been rubbing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not rub?
should you not rub?
should she not rub?
should we not rub?
should you not rub?
should they not rub? 	should I not be rubbing?
should you not be rubbing?
should she not be rubbing?
should we not be rubbing?
should you not be rubbing?
should they not be rubbing? 	should I not have rubbed?
should you not have rubbed?
should she not have rubbed?
should we not have rubbed?
should you not have rubbed?
should they not have rubbed? 	should I not have been rubbing?
should you not have been rubbing?
should she not have been rubbing?
should we not have been rubbing?
should you not have been rubbing?
should they not have been rubbing?