English verb conjugation
MUST INFECT

Regular verb: infect - infected - infected

Affirmation

Simple form	V-ing form
I must infect you must infect she must infect we must infect you must infect they must infect	I must be infecting you must be infecting she must be infecting we must be infecting you must be infecting they must be infecting
Perfect	V-ing perfect
I must have infected you must have infected she must have infected we must have infected you must have infected they must have infected	I must have been infecting you must have been infecting she must have been infecting we must have been infecting you must have been infecting they must have been infecting

Negation

Simple form	V-ing form
I mustn't infect you mustn't infect she mustn't infect we mustn't infect you mustn't infect they mustn't infect	I mustn't be infecting you mustn't be infecting she mustn't be infecting we mustn't be infecting you mustn't be infecting they mustn't be infecting
Perfect	V-ing perfect
I mustn't have infected you mustn't have infected she mustn't have infected we mustn't have infected you mustn't have infected they mustn't have infected	I mustn't have been infecting you mustn't have been infecting she mustn't have been infecting we mustn't have been infecting you mustn't have been infecting they mustn't have been infecting

Interrogative form

Simple form	V-ing form
must I infect? must you infect? must she infect? must we infect? must you infect? must they infect?	must I be infecting? must you be infecting? must she be infecting? must we be infecting? must you be infecting? must they be infecting?
Perfect	V-ing perfect
must I have infected? must you have infected? must she have infected? must we have infected? must you have infected? must they have infected?	must I have been infecting? must you have been infecting? must she have been infecting? must we have been infecting? must you have been infecting? must they have been infecting?

Interro-negative form

Simple form	V-ing form
mustn't I infect? mustn't you infect? mustn't she infect? mustn't we infect? mustn't you infect? mustn't they infect?	mustn't I be infecting? mustn't you be infecting? mustn't she be infecting? mustn't we be infecting? mustn't you be infecting? mustn't they be infecting?
Perfect	V-ing perfect
mustn't I have infected? mustn't you have infected? mustn't she have infected? mustn't we have infected? mustn't you have infected? mustn't they have infected?	mustn't I have been infecting? mustn't you have been infecting? mustn't she have been infecting? mustn't we have been infecting? mustn't you have been infecting? mustn't they have been infecting?