could fox
Verbo regular: fox - foxed- foxed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could fox
you could fox
he could fox
we could fox
you could fox
they could fox 	I could be foxing
you could be foxing
he could be foxing
we could be foxing
you could be foxing
they could be foxing	I could have foxed
you could have foxed
he could have foxed
we could have foxed
you could have foxed
they could have foxed	I could have been foxing
you could have been foxing
he could have been foxing
we could have been foxing
you could have been foxing
they could have been foxing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not fox
you could not fox
he could not fox
we could not fox
you could not fox
they could not fox 	I could not be foxing
you could not be foxing
he could not be foxing
we could not be foxing
you could not be foxing
they could not be foxing	I could not have foxed
you could not have foxed
he could not have foxed
we could not have foxed
you could not have foxed
they could not have foxed	I could not have been foxing
you could not have been foxing
he could not have been foxing
we could not have been foxing
you could not have been foxing
they could not have been foxing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I fox?
could you fox?
could he fox?
could we fox?
could you fox?
could they fox? 	could I be foxing?
could you be foxing?
could he be foxing?
could we be foxing?
could you be foxing?
could they be foxing? 	could I have foxed?
could you have foxed?
could he have foxed?
could we have foxed?
could you have foxed?
could they have foxed? 	could I have been foxing?
could you have been foxing?
could he have been foxing?
could we have been foxing?
could you have been foxing?
could they have been foxing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not fox?
could you not fox?
could he not fox?
could we not fox?
could you not fox?
could they not fox? 	could I not be foxing?
could you not be foxing?
could he not be foxing?
could we not be foxing?
could you not be foxing?
could they not be foxing? 	could I not have foxed?
could you not have foxed?
could he not have foxed?
could we not have foxed?
could you not have foxed?
could they not have foxed? 	could I not have been foxing?
could you not have been foxing?
could he not have been foxing?
could we not have been foxing?
could you not have been foxing?
could they not have been foxing?