could title
Verbo regular: title - titled- titled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could title
you could title
he could title
we could title
you could title
they could title 	I could be titling
you could be titling
he could be titling
we could be titling
you could be titling
they could be titling	I could have titled
you could have titled
he 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
he could have been titling
we could have been titling
you could have been titling
they could have been titling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't title
you couldn't title
he couldn't title
we couldn't title
you couldn't title
they couldn't title 	I couldn't be titling
you couldn't be titling
he couldn't be titling
we couldn't be titling
you couldn't be titling
they couldn't be titling	I couldn't have titled
you couldn't have titled
he couldn't have titled
we couldn't have titled
you couldn't have titled
they couldn't have titled	I couldn't have been titling
you couldn't have been titling
he couldn't have been titling
we couldn't have been titling
you couldn't have been titling
they couldn't have been titling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I title?
could you title?
could he title?
could we title?
could you title?
could they title? 	could I be titling?
could you be titling?
could he be titling?
could we be titling?
could you be titling?
could they be titling? 	could I have titled?
could you have titled?
could he 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 he have been titling?
could we have been titling?
could you have been titling?
could they have been titling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I title?
couldn't you title?
couldn't he title?
couldn't we title?
couldn't you title?
couldn't they title? 	couldn't I be titling?
couldn't you be titling?
couldn't he be titling?
couldn't we be titling?
couldn't you be titling?
couldn't they be titling? 	couldn't I have titled?
couldn't you have titled?
couldn't he have titled?
couldn't we have titled?
couldn't you have titled?
couldn't they have titled? 	couldn't I have been titling?
couldn't you have been titling?
couldn't he have been titling?
couldn't we have been titling?
couldn't you have been titling?
couldn't they have been titling?