must argue
Regular verb: argue - argued- argued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must argue
you must argue
she must argue
we must argue
you must argue
they must argue 	I must be arguing
you must be arguing
she must be arguing
we must be arguing
you must be arguing
they must be arguing	I must have argued
you must have argued
she must have argued
we must have argued
you must have argued
they must have argued	I must have been arguing
you must have been arguing
she must have been arguing
we must have been arguing
you must have been arguing
they must have been arguing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't argue
you mustn't argue
she mustn't argue
we mustn't argue
you mustn't argue
they mustn't argue 	I mustn't be arguing
you mustn't be arguing
she mustn't be arguing
we mustn't be arguing
you mustn't be arguing
they mustn't be arguing	I mustn't have argued
you mustn't have argued
she mustn't have argued
we mustn't have argued
you mustn't have argued
they mustn't have argued	I mustn't have been arguing
you mustn't have been arguing
she mustn't have been arguing
we mustn't have been arguing
you mustn't have been arguing
they mustn't have been arguing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I argue?
must you argue?
must she argue?
must we argue?
must you argue?
must they argue? 	must I be arguing?
must you be arguing?
must she be arguing?
must we be arguing?
must you be arguing?
must they be arguing? 	must I have argued?
must you have argued?
must she have argued?
must we have argued?
must you have argued?
must they have argued? 	must I have been arguing?
must you have been arguing?
must she have been arguing?
must we have been arguing?
must you have been arguing?
must they have been arguing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I argue?
mustn't you argue?
mustn't she argue?
mustn't we argue?
mustn't you argue?
mustn't they argue? 	mustn't I be arguing?
mustn't you be arguing?
mustn't she be arguing?
mustn't we be arguing?
mustn't you be arguing?
mustn't they be arguing? 	mustn't I have argued?
mustn't you have argued?
mustn't she have argued?
mustn't we have argued?
mustn't you have argued?
mustn't they have argued? 	mustn't I have been arguing?
mustn't you have been arguing?
mustn't she have been arguing?
mustn't we have been arguing?
mustn't you have been arguing?
mustn't they have been arguing?