must deduct
Regular verb: deduct - deducted- deducted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must deduct
you must deduct
she must deduct
we must deduct
you must deduct
they must deduct 	I must be deducting
you must be deducting
she must be deducting
we must be deducting
you must be deducting
they must be deducting	I must have deducted
you must have deducted
she must have deducted
we must have deducted
you must have deducted
they must have deducted	I must have been deducting
you must have been deducting
she must have been deducting
we must have been deducting
you must have been deducting
they must have been deducting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't deduct
you mustn't deduct
she mustn't deduct
we mustn't deduct
you mustn't deduct
they mustn't deduct 	I mustn't be deducting
you mustn't be deducting
she mustn't be deducting
we mustn't be deducting
you mustn't be deducting
they mustn't be deducting	I mustn't have deducted
you mustn't have deducted
she mustn't have deducted
we mustn't have deducted
you mustn't have deducted
they mustn't have deducted	I mustn't have been deducting
you mustn't have been deducting
she mustn't have been deducting
we mustn't have been deducting
you mustn't have been deducting
they mustn't have been deducting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I deduct?
must you deduct?
must she deduct?
must we deduct?
must you deduct?
must they deduct? 	must I be deducting?
must you be deducting?
must she be deducting?
must we be deducting?
must you be deducting?
must they be deducting? 	must I have deducted?
must you have deducted?
must she have deducted?
must we have deducted?
must you have deducted?
must they have deducted? 	must I have been deducting?
must you have been deducting?
must she have been deducting?
must we have been deducting?
must you have been deducting?
must they have been deducting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I deduct?
mustn't you deduct?
mustn't she deduct?
mustn't we deduct?
mustn't you deduct?
mustn't they deduct? 	mustn't I be deducting?
mustn't you be deducting?
mustn't she be deducting?
mustn't we be deducting?
mustn't you be deducting?
mustn't they be deducting? 	mustn't I have deducted?
mustn't you have deducted?
mustn't she have deducted?
mustn't we have deducted?
mustn't you have deducted?
mustn't they have deducted? 	mustn't I have been deducting?
mustn't you have been deducting?
mustn't she have been deducting?
mustn't we have been deducting?
mustn't you have been deducting?
mustn't they have been deducting?