I must quintuplicate you must quintuplicate he must quintuplicate we must quintuplicate you must quintuplicate they must quintuplicate
V-ing form
I must be quintuplicating you must be quintuplicating he must be quintuplicating we must be quintuplicating you must be quintuplicating they must be quintuplicating
Perfect
I must have quintuplicated you must have quintuplicated he must have quintuplicated we must have quintuplicated you must have quintuplicated they must have quintuplicated
V-ing perfect
I must have been quintuplicating you must have been quintuplicating he must have been quintuplicating we must have been quintuplicating you must have been quintuplicating they must have been quintuplicating
Negation
Simple form
I mustn't quintuplicate you mustn't quintuplicate he mustn't quintuplicate we mustn't quintuplicate you mustn't quintuplicate they mustn't quintuplicate
V-ing form
I mustn't be quintuplicating you mustn't be quintuplicating he mustn't be quintuplicating we mustn't be quintuplicating you mustn't be quintuplicating they mustn't be quintuplicating
Perfect
I mustn't have quintuplicated you mustn't have quintuplicated he mustn't have quintuplicated we mustn't have quintuplicated you mustn't have quintuplicated they mustn't have quintuplicated
V-ing perfect
I mustn't have been quintuplicating you mustn't have been quintuplicating he mustn't have been quintuplicating we mustn't have been quintuplicating you mustn't have been quintuplicating they mustn't have been quintuplicating
Interrogative form
Simple form
must I quintuplicate? must you quintuplicate? must he quintuplicate? must we quintuplicate? must you quintuplicate? must they quintuplicate?
V-ing form
must I be quintuplicating? must you be quintuplicating? must he be quintuplicating? must we be quintuplicating? must you be quintuplicating? must they be quintuplicating?
Perfect
must I have quintuplicated? must you have quintuplicated? must he have quintuplicated? must we have quintuplicated? must you have quintuplicated? must they have quintuplicated?
V-ing perfect
must I have been quintuplicating? must you have been quintuplicating? must he have been quintuplicating? must we have been quintuplicating? must you have been quintuplicating? must they have been quintuplicating?
Interro-negative form
Simple form
mustn't I quintuplicate? mustn't you quintuplicate? mustn't he quintuplicate? mustn't we quintuplicate? mustn't you quintuplicate? mustn't they quintuplicate?
V-ing form
mustn't I be quintuplicating? mustn't you be quintuplicating? mustn't he be quintuplicating? mustn't we be quintuplicating? mustn't you be quintuplicating? mustn't they be quintuplicating?
Perfect
mustn't I have quintuplicated? mustn't you have quintuplicated? mustn't he have quintuplicated? mustn't we have quintuplicated? mustn't you have quintuplicated? mustn't they have quintuplicated?
V-ing perfect
mustn't I have been quintuplicating? mustn't you have been quintuplicating? mustn't he have been quintuplicating? mustn't we have been quintuplicating? mustn't you have been quintuplicating? mustn't they have been quintuplicating?