English verb conjugation
MUST PREPARE

Regular verb: prepare - prepared - prepared

Affirmation

Simple form	V-ing form
I must prepare you must prepare she must prepare we must prepare you must prepare they must prepare	I must be preparing you must be preparing she must be preparing we must be preparing you must be preparing they must be preparing
Perfect	V-ing perfect
I must have prepared you must have prepared she must have prepared we must have prepared you must have prepared they must have prepared	I must have been preparing you must have been preparing she must have been preparing we must have been preparing you must have been preparing they must have been preparing

Negation

Simple form	V-ing form
I mustn't prepare you mustn't prepare she mustn't prepare we mustn't prepare you mustn't prepare they mustn't prepare	I mustn't be preparing you mustn't be preparing she mustn't be preparing we mustn't be preparing you mustn't be preparing they mustn't be preparing
Perfect	V-ing perfect
I mustn't have prepared you mustn't have prepared she mustn't have prepared we mustn't have prepared you mustn't have prepared they mustn't have prepared	I mustn't have been preparing you mustn't have been preparing she mustn't have been preparing we mustn't have been preparing you mustn't have been preparing they mustn't have been preparing

Interrogative form

Simple form	V-ing form
must I prepare? must you prepare? must she prepare? must we prepare? must you prepare? must they prepare?	must I be preparing? must you be preparing? must she be preparing? must we be preparing? must you be preparing? must they be preparing?
Perfect	V-ing perfect
must I have prepared? must you have prepared? must she have prepared? must we have prepared? must you have prepared? must they have prepared?	must I have been preparing? must you have been preparing? must she have been preparing? must we have been preparing? must you have been preparing? must they have been preparing?

Interro-negative form

Simple form	V-ing form
mustn't I prepare? mustn't you prepare? mustn't she prepare? mustn't we prepare? mustn't you prepare? mustn't they prepare?	mustn't I be preparing? mustn't you be preparing? mustn't she be preparing? mustn't we be preparing? mustn't you be preparing? mustn't they be preparing?
Perfect	V-ing perfect
mustn't I have prepared? mustn't you have prepared? mustn't she have prepared? mustn't we have prepared? mustn't you have prepared? mustn't they have prepared?	mustn't I have been preparing? mustn't you have been preparing? mustn't she have been preparing? mustn't we have been preparing? mustn't you have been preparing? mustn't they have been preparing?