could frank
Verbo regular: frank - franked- franked

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

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

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

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