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 mustn't prepack you mustn't prepack he mustn't prepack we mustn't prepack you mustn't prepack they mustn't prepack	I mustn't be prepacking you mustn't be prepacking he mustn't be prepacking we mustn't be prepacking you mustn't be prepacking they mustn't be prepacking
Perfect	V-ing perfect
I mustn't have prepacked you mustn't have prepacked he mustn't have prepacked we mustn't have prepacked you mustn't have prepacked they mustn't have prepacked	I mustn't have been prepacking you mustn't have been prepacking he mustn't have been prepacking we mustn't have been prepacking you mustn't have been prepacking they mustn't 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
mustn't I prepack? mustn't you prepack? mustn't he prepack? mustn't we prepack? mustn't you prepack? mustn't they prepack?	mustn't I be prepacking? mustn't you be prepacking? mustn't he be prepacking? mustn't we be prepacking? mustn't you be prepacking? mustn't they be prepacking?
Perfect	V-ing perfect
mustn't I have prepacked? mustn't you have prepacked? mustn't he have prepacked? mustn't we have prepacked? mustn't you have prepacked? mustn't they have prepacked?	mustn't I have been prepacking? mustn't you have been prepacking? mustn't he have been prepacking? mustn't we have been prepacking? mustn't you have been prepacking? mustn't they have been prepacking?