must threat
Regular verb: threat - threated- threated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must threat
you must threat
he must threat
we must threat
you must threat
they must threat 	I must be threating
you must be threating
he must be threating
we must be threating
you must be threating
they must be threating	I must have threated
you must have threated
he must have threated
we must have threated
you must have threated
they must have threated	I must have been threating
you must have been threating
he must have been threating
we must have been threating
you must have been threating
they must have been threating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't threat
you mustn't threat
he mustn't threat
we mustn't threat
you mustn't threat
they mustn't threat 	I mustn't be threating
you mustn't be threating
he mustn't be threating
we mustn't be threating
you mustn't be threating
they mustn't be threating	I mustn't have threated
you mustn't have threated
he mustn't have threated
we mustn't have threated
you mustn't have threated
they mustn't have threated	I mustn't have been threating
you mustn't have been threating
he mustn't have been threating
we mustn't have been threating
you mustn't have been threating
they mustn't have been threating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I threat?
must you threat?
must he threat?
must we threat?
must you threat?
must they threat? 	must I be threating?
must you be threating?
must he be threating?
must we be threating?
must you be threating?
must they be threating? 	must I have threated?
must you have threated?
must he have threated?
must we have threated?
must you have threated?
must they have threated? 	must I have been threating?
must you have been threating?
must he have been threating?
must we have been threating?
must you have been threating?
must they have been threating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I threat?
mustn't you threat?
mustn't he threat?
mustn't we threat?
mustn't you threat?
mustn't they threat? 	mustn't I be threating?
mustn't you be threating?
mustn't he be threating?
mustn't we be threating?
mustn't you be threating?
mustn't they be threating? 	mustn't I have threated?
mustn't you have threated?
mustn't he have threated?
mustn't we have threated?
mustn't you have threated?
mustn't they have threated? 	mustn't I have been threating?
mustn't you have been threating?
mustn't he have been threating?
mustn't we have been threating?
mustn't you have been threating?
mustn't they have been threating?