could rail
Verbo regular: rail - railed- railed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could rail
you could rail
he could rail
we could rail
you could rail
they could rail 	I could be railing
you could be railing
he could be railing
we could be railing
you could be railing
they could be railing	I could have railed
you could have railed
he could have railed
we could have railed
you could have railed
they could have railed	I could have been railing
you could have been railing
he could have been railing
we could have been railing
you could have been railing
they could have been railing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not rail
you could not rail
he could not rail
we could not rail
you could not rail
they could not rail 	I could not be railing
you could not be railing
he could not be railing
we could not be railing
you could not be railing
they could not be railing	I could not have railed
you could not have railed
he could not have railed
we could not have railed
you could not have railed
they could not have railed	I could not have been railing
you could not have been railing
he could not have been railing
we could not have been railing
you could not have been railing
they could not have been railing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I rail?
could you rail?
could he rail?
could we rail?
could you rail?
could they rail? 	could I be railing?
could you be railing?
could he be railing?
could we be railing?
could you be railing?
could they be railing? 	could I have railed?
could you have railed?
could he have railed?
could we have railed?
could you have railed?
could they have railed? 	could I have been railing?
could you have been railing?
could he have been railing?
could we have been railing?
could you have been railing?
could they have been railing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not rail?
could you not rail?
could he not rail?
could we not rail?
could you not rail?
could they not rail? 	could I not be railing?
could you not be railing?
could he not be railing?
could we not be railing?
could you not be railing?
could they not be railing? 	could I not have railed?
could you not have railed?
could he not have railed?
could we not have railed?
could you not have railed?
could they not have railed? 	could I not have been railing?
could you not have been railing?
could he not have been railing?
could we not have been railing?
could you not have been railing?
could they not have been railing?