I must deduct you must deduct he must deduct we must deduct you must deduct they must deduct
V-ing form
I must be deducting you must be deducting he must be deducting we must be deducting you must be deducting they must be deducting
Perfect
I must have deducted you must have deducted he must have deducted we must have deducted you must have deducted they must have deducted
V-ing perfect
I must have been deducting you must have been deducting he must have been deducting we must have been deducting you must have been deducting they must have been deducting
Negation
Simple form
I must not deduct you must not deduct he must not deduct we must not deduct you must not deduct they must not deduct
V-ing form
I must not be deducting you must not be deducting he must not be deducting we must not be deducting you must not be deducting they must not be deducting
Perfect
I must not have deducted you must not have deducted he must not have deducted we must not have deducted you must not have deducted they must not have deducted
V-ing perfect
I must not have been deducting you must not have been deducting he must not have been deducting we must not have been deducting you must not have been deducting they must not have been deducting
Interrogative form
Simple form
must I deduct? must you deduct? must he deduct? must we deduct? must you deduct? must they deduct?
V-ing form
must I be deducting? must you be deducting? must he be deducting? must we be deducting? must you be deducting? must they be deducting?
Perfect
must I have deducted? must you have deducted? must he have deducted? must we have deducted? must you have deducted? must they have deducted?
V-ing perfect
must I have been deducting? must you have been deducting? must he have been deducting? must we have been deducting? must you have been deducting? must they have been deducting?
Interro-negative form
Simple form
must I not deduct? must you not deduct? must he not deduct? must we not deduct? must you not deduct? must they not deduct?
V-ing form
must I not be deducting? must you not be deducting? must he not be deducting? must we not be deducting? must you not be deducting? must they not be deducting?
Perfect
must I not have deducted? must you not have deducted? must he not have deducted? must we not have deducted? must you not have deducted? must they not have deducted?
V-ing perfect
must I not have been deducting? must you not have been deducting? must he not have been deducting? must we not have been deducting? must you not have been deducting? must they not have been deducting?