could retail
Verbo regular: retail - retailed- retailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could retail
you could retail
he could retail
we could retail
you could retail
they could retail 	I could be retailing
you could be retailing
he could be retailing
we could be retailing
you could be retailing
they could be retailing	I could have retailed
you could have retailed
he could have retailed
we could have retailed
you could have retailed
they could have retailed	I could have been retailing
you could have been retailing
he could have been retailing
we could have been retailing
you could have been retailing
they could have been retailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't retail
you couldn't retail
he couldn't retail
we couldn't retail
you couldn't retail
they couldn't retail 	I couldn't be retailing
you couldn't be retailing
he couldn't be retailing
we couldn't be retailing
you couldn't be retailing
they couldn't be retailing	I couldn't have retailed
you couldn't have retailed
he couldn't have retailed
we couldn't have retailed
you couldn't have retailed
they couldn't have retailed	I couldn't have been retailing
you couldn't have been retailing
he couldn't have been retailing
we couldn't have been retailing
you couldn't have been retailing
they couldn't have been retailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I retail?
could you retail?
could he retail?
could we retail?
could you retail?
could they retail? 	could I be retailing?
could you be retailing?
could he be retailing?
could we be retailing?
could you be retailing?
could they be retailing? 	could I have retailed?
could you have retailed?
could he have retailed?
could we have retailed?
could you have retailed?
could they have retailed? 	could I have been retailing?
could you have been retailing?
could he have been retailing?
could we have been retailing?
could you have been retailing?
could they have been retailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I retail?
couldn't you retail?
couldn't he retail?
couldn't we retail?
couldn't you retail?
couldn't they retail? 	couldn't I be retailing?
couldn't you be retailing?
couldn't he be retailing?
couldn't we be retailing?
couldn't you be retailing?
couldn't they be retailing? 	couldn't I have retailed?
couldn't you have retailed?
couldn't he have retailed?
couldn't we have retailed?
couldn't you have retailed?
couldn't they have retailed? 	couldn't I have been retailing?
couldn't you have been retailing?
couldn't he have been retailing?
couldn't we have been retailing?
couldn't you have been retailing?
couldn't they have been retailing?