should function
Verbo regular: function - functioned- functioned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should function
you should function
she should function
we should function
you should function
they should function 	I should be functioning
you should be functioning
she should be functioning
we should be functioning
you should be functioning
they should be functioning	I should have functioned
you should have functioned
she should have functioned
we should have functioned
you should have functioned
they should have functioned	I should have been functioning
you should have been functioning
she should have been functioning
we should have been functioning
you should have been functioning
they should have been functioning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not function
you should not function
she should not function
we should not function
you should not function
they should not function 	I should not be functioning
you should not be functioning
she should not be functioning
we should not be functioning
you should not be functioning
they should not be functioning	I should not have functioned
you should not have functioned
she should not have functioned
we should not have functioned
you should not have functioned
they should not have functioned	I should not have been functioning
you should not have been functioning
she should not have been functioning
we should not have been functioning
you should not have been functioning
they should not have been functioning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I function?
should you function?
should she function?
should we function?
should you function?
should they function? 	should I be functioning?
should you be functioning?
should she be functioning?
should we be functioning?
should you be functioning?
should they be functioning? 	should I have functioned?
should you have functioned?
should she have functioned?
should we have functioned?
should you have functioned?
should they have functioned? 	should I have been functioning?
should you have been functioning?
should she have been functioning?
should we have been functioning?
should you have been functioning?
should they have been functioning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not function?
should you not function?
should she not function?
should we not function?
should you not function?
should they not function? 	should I not be functioning?
should you not be functioning?
should she not be functioning?
should we not be functioning?
should you not be functioning?
should they not be functioning? 	should I not have functioned?
should you not have functioned?
should she not have functioned?
should we not have functioned?
should you not have functioned?
should they not have functioned? 	should I not have been functioning?
should you not have been functioning?
should she not have been functioning?
should we not have been functioning?
should you not have been functioning?
should they not have been functioning?