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 couldn't frank
you couldn't frank
he couldn't frank
we couldn't frank
you couldn't frank
they couldn't frank 	I couldn't be franking
you couldn't be franking
he couldn't be franking
we couldn't be franking
you couldn't be franking
they couldn't be franking	I couldn't have franked
you couldn't have franked
he couldn't have franked
we couldn't have franked
you couldn't have franked
they couldn't have franked	I couldn't have been franking
you couldn't have been franking
he couldn't have been franking
we couldn't have been franking
you couldn't have been franking
they couldn't 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 	
couldn't I frank?
couldn't you frank?
couldn't he frank?
couldn't we frank?
couldn't you frank?
couldn't they frank? 	couldn't I be franking?
couldn't you be franking?
couldn't he be franking?
couldn't we be franking?
couldn't you be franking?
couldn't they be franking? 	couldn't I have franked?
couldn't you have franked?
couldn't he have franked?
couldn't we have franked?
couldn't you have franked?
couldn't they have franked? 	couldn't I have been franking?
couldn't you have been franking?
couldn't he have been franking?
couldn't we have been franking?
couldn't you have been franking?
couldn't they have been franking?