English verb conjugation
MUST INTRODUCE

Regular verb: introduce - introduced - introduced

Affirmation

Simple form	V-ing form
I must introduce you must introduce he must introduce we must introduce you must introduce they must introduce	I must be introducing you must be introducing he must be introducing we must be introducing you must be introducing they must be introducing
Perfect	V-ing perfect
I must have introduced you must have introduced he must have introduced we must have introduced you must have introduced they must have introduced	I must have been introducing you must have been introducing he must have been introducing we must have been introducing you must have been introducing they must have been introducing

Negation

Simple form	V-ing form
I mustn't introduce you mustn't introduce he mustn't introduce we mustn't introduce you mustn't introduce they mustn't introduce	I mustn't be introducing you mustn't be introducing he mustn't be introducing we mustn't be introducing you mustn't be introducing they mustn't be introducing
Perfect	V-ing perfect
I mustn't have introduced you mustn't have introduced he mustn't have introduced we mustn't have introduced you mustn't have introduced they mustn't have introduced	I mustn't have been introducing you mustn't have been introducing he mustn't have been introducing we mustn't have been introducing you mustn't have been introducing they mustn't have been introducing

Interrogative form

Simple form	V-ing form
must I introduce? must you introduce? must he introduce? must we introduce? must you introduce? must they introduce?	must I be introducing? must you be introducing? must he be introducing? must we be introducing? must you be introducing? must they be introducing?
Perfect	V-ing perfect
must I have introduced? must you have introduced? must he have introduced? must we have introduced? must you have introduced? must they have introduced?	must I have been introducing? must you have been introducing? must he have been introducing? must we have been introducing? must you have been introducing? must they have been introducing?

Interro-negative form

Simple form	V-ing form
mustn't I introduce? mustn't you introduce? mustn't he introduce? mustn't we introduce? mustn't you introduce? mustn't they introduce?	mustn't I be introducing? mustn't you be introducing? mustn't he be introducing? mustn't we be introducing? mustn't you be introducing? mustn't they be introducing?
Perfect	V-ing perfect
mustn't I have introduced? mustn't you have introduced? mustn't he have introduced? mustn't we have introduced? mustn't you have introduced? mustn't they have introduced?	mustn't I have been introducing? mustn't you have been introducing? mustn't he have been introducing? mustn't we have been introducing? mustn't you have been introducing? mustn't they have been introducing?