English verb conjugation
MUST STAR

Regular verb: star - starred - starred

Affirmation

Simple form	V-ing form
I must star you must star he must star we must star you must star they must star	I must be starring you must be starring he must be starring we must be starring you must be starring they must be starring
Perfect	V-ing perfect
I must have starred you must have starred he must have starred we must have starred you must have starred they must have starred	I must have been starring you must have been starring he must have been starring we must have been starring you must have been starring they must have been starring

Negation

Simple form	V-ing form
I must not star you must not star he must not star we must not star you must not star they must not star	I must not be starring you must not be starring he must not be starring we must not be starring you must not be starring they must not be starring
Perfect	V-ing perfect
I must not have starred you must not have starred he must not have starred we must not have starred you must not have starred they must not have starred	I must not have been starring you must not have been starring he must not have been starring we must not have been starring you must not have been starring they must not have been starring

Interrogative form

Simple form	V-ing form
must I star? must you star? must he star? must we star? must you star? must they star?	must I be starring? must you be starring? must he be starring? must we be starring? must you be starring? must they be starring?
Perfect	V-ing perfect
must I have starred? must you have starred? must he have starred? must we have starred? must you have starred? must they have starred?	must I have been starring? must you have been starring? must he have been starring? must we have been starring? must you have been starring? must they have been starring?

Interro-negative form

Simple form	V-ing form
must I not star? must you not star? must he not star? must we not star? must you not star? must they not star?	must I not be starring? must you not be starring? must he not be starring? must we not be starring? must you not be starring? must they not be starring?
Perfect	V-ing perfect
must I not have starred? must you not have starred? must he not have starred? must we not have starred? must you not have starred? must they not have starred?	must I not have been starring? must you not have been starring? must he not have been starring? must we not have been starring? must you not have been starring? must they not have been starring?