should frank
Verbo regular: frank - franked- franked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should frank
you should frank
she should frank
we should frank
you should frank
they should frank 	I should be franking
you should be franking
she should be franking
we should be franking
you should be franking
they should be franking	I should have franked
you should have franked
she should have franked
we should have franked
you should have franked
they should have franked	I should have been franking
you should have been franking
she should have been franking
we should have been franking
you should have been franking
they should have been franking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not frank
you should not frank
she should not frank
we should not frank
you should not frank
they should not frank 	I should not be franking
you should not be franking
she should not be franking
we should not be franking
you should not be franking
they should not be franking	I should not have franked
you should not have franked
she should not have franked
we should not have franked
you should not have franked
they should not have franked	I should not have been franking
you should not have been franking
she should not have been franking
we should not have been franking
you should not have been franking
they should not have been franking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I frank?
should you frank?
should she frank?
should we frank?
should you frank?
should they frank? 	should I be franking?
should you be franking?
should she be franking?
should we be franking?
should you be franking?
should they be franking? 	should I have franked?
should you have franked?
should she have franked?
should we have franked?
should you have franked?
should they have franked? 	should I have been franking?
should you have been franking?
should she have been franking?
should we have been franking?
should you have been franking?
should they have been franking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not frank?
should you not frank?
should she not frank?
should we not frank?
should you not frank?
should they not frank? 	should I not be franking?
should you not be franking?
should she not be franking?
should we not be franking?
should you not be franking?
should they not be franking? 	should I not have franked?
should you not have franked?
should she not have franked?
should we not have franked?
should you not have franked?
should they not have franked? 	should I not have been franking?
should you not have been franking?
should she not have been franking?
should we not have been franking?
should you not have been franking?
should they not have been franking?