could elaborate
Verbo regular: elaborate - elaborated- elaborated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could elaborate
you could elaborate
he could elaborate
we could elaborate
you could elaborate
they could elaborate 	I could be elaborating
you could be elaborating
he could be elaborating
we could be elaborating
you could be elaborating
they could be elaborating	I could have elaborated
you could have elaborated
he could have elaborated
we could have elaborated
you could have elaborated
they could have elaborated	I could have been elaborating
you could have been elaborating
he could have been elaborating
we could have been elaborating
you could have been elaborating
they could have been elaborating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't elaborate
you couldn't elaborate
he couldn't elaborate
we couldn't elaborate
you couldn't elaborate
they couldn't elaborate 	I couldn't be elaborating
you couldn't be elaborating
he couldn't be elaborating
we couldn't be elaborating
you couldn't be elaborating
they couldn't be elaborating	I couldn't have elaborated
you couldn't have elaborated
he couldn't have elaborated
we couldn't have elaborated
you couldn't have elaborated
they couldn't have elaborated	I couldn't have been elaborating
you couldn't have been elaborating
he couldn't have been elaborating
we couldn't have been elaborating
you couldn't have been elaborating
they couldn't have been elaborating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I elaborate?
could you elaborate?
could he elaborate?
could we elaborate?
could you elaborate?
could they elaborate? 	could I be elaborating?
could you be elaborating?
could he be elaborating?
could we be elaborating?
could you be elaborating?
could they be elaborating? 	could I have elaborated?
could you have elaborated?
could he have elaborated?
could we have elaborated?
could you have elaborated?
could they have elaborated? 	could I have been elaborating?
could you have been elaborating?
could he have been elaborating?
could we have been elaborating?
could you have been elaborating?
could they have been elaborating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I elaborate?
couldn't you elaborate?
couldn't he elaborate?
couldn't we elaborate?
couldn't you elaborate?
couldn't they elaborate? 	couldn't I be elaborating?
couldn't you be elaborating?
couldn't he be elaborating?
couldn't we be elaborating?
couldn't you be elaborating?
couldn't they be elaborating? 	couldn't I have elaborated?
couldn't you have elaborated?
couldn't he have elaborated?
couldn't we have elaborated?
couldn't you have elaborated?
couldn't they have elaborated? 	couldn't I have been elaborating?
couldn't you have been elaborating?
couldn't he have been elaborating?
couldn't we have been elaborating?
couldn't you have been elaborating?
couldn't they have been elaborating?