could uppercase
Verbo regular: uppercase - uppercased- uppercased

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could uppercase
you could uppercase
he could uppercase
we could uppercase
you could uppercase
they could uppercase 	I could be uppercasing
you could be uppercasing
he could be uppercasing
we could be uppercasing
you could be uppercasing
they could be uppercasing	I could have uppercased
you could have uppercased
he could have uppercased
we could have uppercased
you could have uppercased
they could have uppercased	I could have been uppercasing
you could have been uppercasing
he could have been uppercasing
we could have been uppercasing
you could have been uppercasing
they could have been uppercasing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not uppercase
you could not uppercase
he could not uppercase
we could not uppercase
you could not uppercase
they could not uppercase 	I could not be uppercasing
you could not be uppercasing
he could not be uppercasing
we could not be uppercasing
you could not be uppercasing
they could not be uppercasing	I could not have uppercased
you could not have uppercased
he could not have uppercased
we could not have uppercased
you could not have uppercased
they could not have uppercased	I could not have been uppercasing
you could not have been uppercasing
he could not have been uppercasing
we could not have been uppercasing
you could not have been uppercasing
they could not have been uppercasing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I uppercase?
could you uppercase?
could he uppercase?
could we uppercase?
could you uppercase?
could they uppercase? 	could I be uppercasing?
could you be uppercasing?
could he be uppercasing?
could we be uppercasing?
could you be uppercasing?
could they be uppercasing? 	could I have uppercased?
could you have uppercased?
could he have uppercased?
could we have uppercased?
could you have uppercased?
could they have uppercased? 	could I have been uppercasing?
could you have been uppercasing?
could he have been uppercasing?
could we have been uppercasing?
could you have been uppercasing?
could they have been uppercasing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not uppercase?
could you not uppercase?
could he not uppercase?
could we not uppercase?
could you not uppercase?
could they not uppercase? 	could I not be uppercasing?
could you not be uppercasing?
could he not be uppercasing?
could we not be uppercasing?
could you not be uppercasing?
could they not be uppercasing? 	could I not have uppercased?
could you not have uppercased?
could he not have uppercased?
could we not have uppercased?
could you not have uppercased?
could they not have uppercased? 	could I not have been uppercasing?
could you not have been uppercasing?
could he not have been uppercasing?
could we not have been uppercasing?
could you not have been uppercasing?
could they not have been uppercasing?