could title
Verbo regular: title - titled- titled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could title
you could title
she could title
we could title
you could title
they could title 	I could be titling
you could be titling
she could be titling
we could be titling
you could be titling
they could be titling	I could have titled
you could have titled
she could have titled
we could have titled
you could have titled
they could have titled	I could have been titling
you could have been titling
she could have been titling
we could have been titling
you could have been titling
they could have been titling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not title
you could not title
she could not title
we could not title
you could not title
they could not title 	I could not be titling
you could not be titling
she could not be titling
we could not be titling
you could not be titling
they could not be titling	I could not have titled
you could not have titled
she could not have titled
we could not have titled
you could not have titled
they could not have titled	I could not have been titling
you could not have been titling
she could not have been titling
we could not have been titling
you could not have been titling
they could not have been titling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I title?
could you title?
could she title?
could we title?
could you title?
could they title? 	could I be titling?
could you be titling?
could she be titling?
could we be titling?
could you be titling?
could they be titling? 	could I have titled?
could you have titled?
could she have titled?
could we have titled?
could you have titled?
could they have titled? 	could I have been titling?
could you have been titling?
could she have been titling?
could we have been titling?
could you have been titling?
could they have been titling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not title?
could you not title?
could she not title?
could we not title?
could you not title?
could they not title? 	could I not be titling?
could you not be titling?
could she not be titling?
could we not be titling?
could you not be titling?
could they not be titling? 	could I not have titled?
could you not have titled?
could she not have titled?
could we not have titled?
could you not have titled?
could they not have titled? 	could I not have been titling?
could you not have been titling?
could she not have been titling?
could we not have been titling?
could you not have been titling?
could they not have been titling?