must butylate
Regular verb: butylate - butylated- butylated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must butylate
you must butylate
he must butylate
we must butylate
you must butylate
they must butylate 	I must be butylating
you must be butylating
he must be butylating
we must be butylating
you must be butylating
they must be butylating	I must have butylated
you must have butylated
he must have butylated
we must have butylated
you must have butylated
they must have butylated	I must have been butylating
you must have been butylating
he must have been butylating
we must have been butylating
you must have been butylating
they must have been butylating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't butylate
you mustn't butylate
he mustn't butylate
we mustn't butylate
you mustn't butylate
they mustn't butylate 	I mustn't be butylating
you mustn't be butylating
he mustn't be butylating
we mustn't be butylating
you mustn't be butylating
they mustn't be butylating	I mustn't have butylated
you mustn't have butylated
he mustn't have butylated
we mustn't have butylated
you mustn't have butylated
they mustn't have butylated	I mustn't have been butylating
you mustn't have been butylating
he mustn't have been butylating
we mustn't have been butylating
you mustn't have been butylating
they mustn't have been butylating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I butylate?
must you butylate?
must he butylate?
must we butylate?
must you butylate?
must they butylate? 	must I be butylating?
must you be butylating?
must he be butylating?
must we be butylating?
must you be butylating?
must they be butylating? 	must I have butylated?
must you have butylated?
must he have butylated?
must we have butylated?
must you have butylated?
must they have butylated? 	must I have been butylating?
must you have been butylating?
must he have been butylating?
must we have been butylating?
must you have been butylating?
must they have been butylating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I butylate?
mustn't you butylate?
mustn't he butylate?
mustn't we butylate?
mustn't you butylate?
mustn't they butylate? 	mustn't I be butylating?
mustn't you be butylating?
mustn't he be butylating?
mustn't we be butylating?
mustn't you be butylating?
mustn't they be butylating? 	mustn't I have butylated?
mustn't you have butylated?
mustn't he have butylated?
mustn't we have butylated?
mustn't you have butylated?
mustn't they have butylated? 	mustn't I have been butylating?
mustn't you have been butylating?
mustn't he have been butylating?
mustn't we have been butylating?
mustn't you have been butylating?
mustn't they have been butylating?