can coo
Verbo regular: coo - cooed- cooed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can coo
you can coo
he can coo
we can coo
you can coo
they can coo 	I can be cooing
you can be cooing
he can be cooing
we can be cooing
you can be cooing
they can be cooing	I can have cooed
you can have cooed
he can have cooed
we can have cooed
you can have cooed
they can have cooed	I can have been cooing
you can have been cooing
he can have been cooing
we can have been cooing
you can have been cooing
they can have been cooing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot coo
you cannot coo
he cannot coo
we cannot coo
you cannot coo
they cannot coo 	I cannot be cooing
you cannot be cooing
he cannot be cooing
we cannot be cooing
you cannot be cooing
they cannot be cooing	I cannot have cooed
you cannot have cooed
he cannot have cooed
we cannot have cooed
you cannot have cooed
they cannot have cooed	I cannot have been cooing
you cannot have been cooing
he cannot have been cooing
we cannot have been cooing
you cannot have been cooing
they cannot have been cooing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I coo?
can you coo?
can he coo?
can we coo?
can you coo?
can they coo? 	can I be cooing?
can you be cooing?
can he be cooing?
can we be cooing?
can you be cooing?
can they be cooing? 	can I have cooed?
can you have cooed?
can he have cooed?
can we have cooed?
can you have cooed?
can they have cooed? 	can I have been cooing?
can you have been cooing?
can he have been cooing?
can we have been cooing?
can you have been cooing?
can they have been cooing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not coo?
can you not coo?
can he not coo?
can we not coo?
can you not coo?
can they not coo? 	can I not be cooing?
can you not be cooing?
can he not be cooing?
can we not be cooing?
can you not be cooing?
can they not be cooing? 	can I not have cooed?
can you not have cooed?
can he not have cooed?
can we not have cooed?
can you not have cooed?
can they not have cooed? 	can I not have been cooing?
can you not have been cooing?
can he not have been cooing?
can we not have been cooing?
can you not have been cooing?
can they not have been cooing?