could butylate
Verbe régulier : butylate - butylated- butylated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could butylate
you could butylate
she could butylate
we could butylate
you could butylate
they could butylate 	I could be butylating
you could be butylating
she could be butylating
we could be butylating
you could be butylating
they could be butylating	I could have butylated
you could have butylated
she 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
she could have been butylating
we could have been butylating
you could have been butylating
they could have been butylating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not butylate
you could not butylate
she 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
she 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
she 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
she could not have been butylating
we could not have been butylating
you could not have been butylating
they could not have been butylating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I butylate?
could you butylate?
could she butylate?
could we butylate?
could you butylate?
could they butylate? 	could I be butylating?
could you be butylating?
could she be butylating?
could we be butylating?
could you be butylating?
could they be butylating? 	could I have butylated?
could you have butylated?
could she 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 she have been butylating?
could we have been butylating?
could you have been butylating?
could they have been butylating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not butylate?
could you not butylate?
could she 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 she 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 she 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 she not have been butylating?
could we not have been butylating?
could you not have been butylating?
could they not have been butylating?