could reply
Verbo regular: reply - replied- replied

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could reply
you could reply
she could reply
we could reply
you could reply
they could reply 	I could be replying
you could be replying
she could be replying
we could be replying
you could be replying
they could be replying	I could have replied
you could have replied
she could have replied
we could have replied
you could have replied
they could have replied	I could have been replying
you could have been replying
she could have been replying
we could have been replying
you could have been replying
they could have been replying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not reply
you could not reply
she could not reply
we could not reply
you could not reply
they could not reply 	I could not be replying
you could not be replying
she could not be replying
we could not be replying
you could not be replying
they could not be replying	I could not have replied
you could not have replied
she could not have replied
we could not have replied
you could not have replied
they could not have replied	I could not have been replying
you could not have been replying
she could not have been replying
we could not have been replying
you could not have been replying
they could not have been replying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I reply?
could you reply?
could she reply?
could we reply?
could you reply?
could they reply? 	could I be replying?
could you be replying?
could she be replying?
could we be replying?
could you be replying?
could they be replying? 	could I have replied?
could you have replied?
could she have replied?
could we have replied?
could you have replied?
could they have replied? 	could I have been replying?
could you have been replying?
could she have been replying?
could we have been replying?
could you have been replying?
could they have been replying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not reply?
could you not reply?
could she not reply?
could we not reply?
could you not reply?
could they not reply? 	could I not be replying?
could you not be replying?
could she not be replying?
could we not be replying?
could you not be replying?
could they not be replying? 	could I not have replied?
could you not have replied?
could she not have replied?
could we not have replied?
could you not have replied?
could they not have replied? 	could I not have been replying?
could you not have been replying?
could she not have been replying?
could we not have been replying?
could you not have been replying?
could they not have been replying?