English verb conjugation
MUST PREPACK

Regular verb: prepack - prepacked - prepacked

Affirmation

Simple form	V-ing form
I must prepack you must prepack he must prepack we must prepack you must prepack they must prepack	I must be prepacking you must be prepacking he 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 he 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 he 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 he 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 he 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 he 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 he 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 he prepack? must we prepack? must you prepack? must they prepack?	must I be prepacking? must you be prepacking? must he 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 he 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 he 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 he 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 he 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 he 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 he not have been prepacking? must we not have been prepacking? must you not have been prepacking? must they not have been prepacking?