could sundown
Verbo regular: sundown - sundowned- sundowned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could sundown
you could sundown
he could sundown
we could sundown
you could sundown
they could sundown 	I could be sundowning
you could be sundowning
he could be sundowning
we could be sundowning
you could be sundowning
they could be sundowning	I could have sundowned
you could have sundowned
he could have sundowned
we could have sundowned
you could have sundowned
they could have sundowned	I could have been sundowning
you could have been sundowning
he could have been sundowning
we could have been sundowning
you could have been sundowning
they could have been sundowning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not sundown
you could not sundown
he could not sundown
we could not sundown
you could not sundown
they could not sundown 	I could not be sundowning
you could not be sundowning
he could not be sundowning
we could not be sundowning
you could not be sundowning
they could not be sundowning	I could not have sundowned
you could not have sundowned
he could not have sundowned
we could not have sundowned
you could not have sundowned
they could not have sundowned	I could not have been sundowning
you could not have been sundowning
he could not have been sundowning
we could not have been sundowning
you could not have been sundowning
they could not have been sundowning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I sundown?
could you sundown?
could he sundown?
could we sundown?
could you sundown?
could they sundown? 	could I be sundowning?
could you be sundowning?
could he be sundowning?
could we be sundowning?
could you be sundowning?
could they be sundowning? 	could I have sundowned?
could you have sundowned?
could he have sundowned?
could we have sundowned?
could you have sundowned?
could they have sundowned? 	could I have been sundowning?
could you have been sundowning?
could he have been sundowning?
could we have been sundowning?
could you have been sundowning?
could they have been sundowning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not sundown?
could you not sundown?
could he not sundown?
could we not sundown?
could you not sundown?
could they not sundown? 	could I not be sundowning?
could you not be sundowning?
could he not be sundowning?
could we not be sundowning?
could you not be sundowning?
could they not be sundowning? 	could I not have sundowned?
could you not have sundowned?
could he not have sundowned?
could we not have sundowned?
could you not have sundowned?
could they not have sundowned? 	could I not have been sundowning?
could you not have been sundowning?
could he not have been sundowning?
could we not have been sundowning?
could you not have been sundowning?
could they not have been sundowning?