could butylate
Verbo regular: butylate - butylated- butylated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could butylate
you could butylate
he could butylate
we could butylate
you could butylate
they could butylate 	I could be butylating
you could be butylating
he could be butylating
we could be butylating
you could be butylating
they could be butylating	I could have butylated
you could have butylated
he could have butylated
we could have butylated
you could have butylated
they could have butylated	I could have been butylating
you could have been butylating
he could have been butylating
we could have been butylating
you could have been butylating
they could have been butylating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not butylate
you could not butylate
he could not butylate
we could not butylate
you could not butylate
they could not butylate 	I could not be butylating
you could not be butylating
he could not be butylating
we could not be butylating
you could not be butylating
they could not be butylating	I could not have butylated
you could not have butylated
he could not have butylated
we could not have butylated
you could not have butylated
they could not have butylated	I could not have been butylating
you could not have been butylating
he could not have been butylating
we could not have been butylating
you could not have been butylating
they could not have been butylating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I butylate?
could you butylate?
could he butylate?
could we butylate?
could you butylate?
could they butylate? 	could I be butylating?
could you be butylating?
could he be butylating?
could we be butylating?
could you be butylating?
could they be butylating? 	could I have butylated?
could you have butylated?
could he have butylated?
could we have butylated?
could you have butylated?
could they have butylated? 	could I have been butylating?
could you have been butylating?
could he have been butylating?
could we have been butylating?
could you have been butylating?
could they have been butylating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not butylate?
could you not butylate?
could he not butylate?
could we not butylate?
could you not butylate?
could they not butylate? 	could I not be butylating?
could you not be butylating?
could he not be butylating?
could we not be butylating?
could you not be butylating?
could they not be butylating? 	could I not have butylated?
could you not have butylated?
could he not have butylated?
could we not have butylated?
could you not have butylated?
could they not have butylated? 	could I not have been butylating?
could you not have been butylating?
could he not have been butylating?
could we not have been butylating?
could you not have been butylating?
could they not have been butylating?