English verb conjugation
MUST PREPACK

Regular verb: prepack - prepacked - prepacked

Affirmation

Simple form	V-ing form
I must prepack you must prepack she must prepack we must prepack you must prepack they must prepack	I must be prepacking you must be prepacking she must be prepacking we must be prepacking you must be prepacking they must be prepacking
Perfect	V-ing perfect
I must have prepacked you must have prepacked she must have prepacked we must have prepacked you must have prepacked they must have prepacked	I must have been prepacking you must have been prepacking she must have been prepacking we must have been prepacking you must have been prepacking they must have been prepacking

Negation

Simple form	V-ing form
I must not prepack you must not prepack she must not prepack we must not prepack you must not prepack they must not prepack	I must not be prepacking you must not be prepacking she must not be prepacking we must not be prepacking you must not be prepacking they must not be prepacking
Perfect	V-ing perfect
I must not have prepacked you must not have prepacked she must not have prepacked we must not have prepacked you must not have prepacked they must not have prepacked	I must not have been prepacking you must not have been prepacking she must not have been prepacking we must not have been prepacking you must not have been prepacking they must not have been prepacking

Interrogative form

Simple form	V-ing form
must I prepack? must you prepack? must she prepack? must we prepack? must you prepack? must they prepack?	must I be prepacking? must you be prepacking? must she be prepacking? must we be prepacking? must you be prepacking? must they be prepacking?
Perfect	V-ing perfect
must I have prepacked? must you have prepacked? must she have prepacked? must we have prepacked? must you have prepacked? must they have prepacked?	must I have been prepacking? must you have been prepacking? must she have been prepacking? must we have been prepacking? must you have been prepacking? must they have been prepacking?

Interro-negative form

Simple form	V-ing form
must I not prepack? must you not prepack? must she not prepack? must we not prepack? must you not prepack? must they not prepack?	must I not be prepacking? must you not be prepacking? must she not be prepacking? must we not be prepacking? must you not be prepacking? must they not be prepacking?
Perfect	V-ing perfect
must I not have prepacked? must you not have prepacked? must she not have prepacked? must we not have prepacked? must you not have prepacked? must they not have prepacked?	must I not have been prepacking? must you not have been prepacking? must she not have been prepacking? must we not have been prepacking? must you not have been prepacking? must they not have been prepacking?