must louse
Regular verb: louse - loused- loused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must louse
you must louse
he must louse
we must louse
you must louse
they must louse 	I must be lousing
you must be lousing
he must be lousing
we must be lousing
you must be lousing
they must be lousing	I must have loused
you must have loused
he must have loused
we must have loused
you must have loused
they must have loused	I must have been lousing
you must have been lousing
he must have been lousing
we must have been lousing
you must have been lousing
they must have been lousing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't louse
you mustn't louse
he mustn't louse
we mustn't louse
you mustn't louse
they mustn't louse 	I mustn't be lousing
you mustn't be lousing
he mustn't be lousing
we mustn't be lousing
you mustn't be lousing
they mustn't be lousing	I mustn't have loused
you mustn't have loused
he mustn't have loused
we mustn't have loused
you mustn't have loused
they mustn't have loused	I mustn't have been lousing
you mustn't have been lousing
he mustn't have been lousing
we mustn't have been lousing
you mustn't have been lousing
they mustn't have been lousing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I louse?
must you louse?
must he louse?
must we louse?
must you louse?
must they louse? 	must I be lousing?
must you be lousing?
must he be lousing?
must we be lousing?
must you be lousing?
must they be lousing? 	must I have loused?
must you have loused?
must he have loused?
must we have loused?
must you have loused?
must they have loused? 	must I have been lousing?
must you have been lousing?
must he have been lousing?
must we have been lousing?
must you have been lousing?
must they have been lousing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I louse?
mustn't you louse?
mustn't he louse?
mustn't we louse?
mustn't you louse?
mustn't they louse? 	mustn't I be lousing?
mustn't you be lousing?
mustn't he be lousing?
mustn't we be lousing?
mustn't you be lousing?
mustn't they be lousing? 	mustn't I have loused?
mustn't you have loused?
mustn't he have loused?
mustn't we have loused?
mustn't you have loused?
mustn't they have loused? 	mustn't I have been lousing?
mustn't you have been lousing?
mustn't he have been lousing?
mustn't we have been lousing?
mustn't you have been lousing?
mustn't they have been lousing?