could end
Verbo regular: end - ended- ended

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could end
you could end
he could end
we could end
you could end
they could end 	I could be ending
you could be ending
he could be ending
we could be ending
you could be ending
they could be ending	I could have ended
you could have ended
he could have ended
we could have ended
you could have ended
they could have ended	I could have been ending
you could have been ending
he could have been ending
we could have been ending
you could have been ending
they could have been ending	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not end
you could not end
he could not end
we could not end
you could not end
they could not end 	I could not be ending
you could not be ending
he could not be ending
we could not be ending
you could not be ending
they could not be ending	I could not have ended
you could not have ended
he could not have ended
we could not have ended
you could not have ended
they could not have ended	I could not have been ending
you could not have been ending
he could not have been ending
we could not have been ending
you could not have been ending
they could not have been ending	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I end?
could you end?
could he end?
could we end?
could you end?
could they end? 	could I be ending?
could you be ending?
could he be ending?
could we be ending?
could you be ending?
could they be ending? 	could I have ended?
could you have ended?
could he have ended?
could we have ended?
could you have ended?
could they have ended? 	could I have been ending?
could you have been ending?
could he have been ending?
could we have been ending?
could you have been ending?
could they have been ending? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not end?
could you not end?
could he not end?
could we not end?
could you not end?
could they not end? 	could I not be ending?
could you not be ending?
could he not be ending?
could we not be ending?
could you not be ending?
could they not be ending? 	could I not have ended?
could you not have ended?
could he not have ended?
could we not have ended?
could you not have ended?
could they not have ended? 	could I not have been ending?
could you not have been ending?
could he not have been ending?
could we not have been ending?
could you not have been ending?
could they not have been ending?