English verb conjugation
MUST PREFREEZE

Regular verb: prefreeze - prefreezed - prefreezed

Affirmation

Simple form	V-ing form
I must prefreeze you must prefreeze she must prefreeze we must prefreeze you must prefreeze they must prefreeze	I must be prefreezing you must be prefreezing she must be prefreezing we must be prefreezing you must be prefreezing they must be prefreezing
Perfect	V-ing perfect
I must have prefreezed you must have prefreezed she must have prefreezed we must have prefreezed you must have prefreezed they must have prefreezed	I must have been prefreezing you must have been prefreezing she must have been prefreezing we must have been prefreezing you must have been prefreezing they must have been prefreezing

Negation

Simple form	V-ing form
I mustn't prefreeze you mustn't prefreeze she mustn't prefreeze we mustn't prefreeze you mustn't prefreeze they mustn't prefreeze	I mustn't be prefreezing you mustn't be prefreezing she mustn't be prefreezing we mustn't be prefreezing you mustn't be prefreezing they mustn't be prefreezing
Perfect	V-ing perfect
I mustn't have prefreezed you mustn't have prefreezed she mustn't have prefreezed we mustn't have prefreezed you mustn't have prefreezed they mustn't have prefreezed	I mustn't have been prefreezing you mustn't have been prefreezing she mustn't have been prefreezing we mustn't have been prefreezing you mustn't have been prefreezing they mustn't have been prefreezing

Interrogative form

Simple form	V-ing form
must I prefreeze? must you prefreeze? must she prefreeze? must we prefreeze? must you prefreeze? must they prefreeze?	must I be prefreezing? must you be prefreezing? must she be prefreezing? must we be prefreezing? must you be prefreezing? must they be prefreezing?
Perfect	V-ing perfect
must I have prefreezed? must you have prefreezed? must she have prefreezed? must we have prefreezed? must you have prefreezed? must they have prefreezed?	must I have been prefreezing? must you have been prefreezing? must she have been prefreezing? must we have been prefreezing? must you have been prefreezing? must they have been prefreezing?

Interro-negative form

Simple form	V-ing form
mustn't I prefreeze? mustn't you prefreeze? mustn't she prefreeze? mustn't we prefreeze? mustn't you prefreeze? mustn't they prefreeze?	mustn't I be prefreezing? mustn't you be prefreezing? mustn't she be prefreezing? mustn't we be prefreezing? mustn't you be prefreezing? mustn't they be prefreezing?
Perfect	V-ing perfect
mustn't I have prefreezed? mustn't you have prefreezed? mustn't she have prefreezed? mustn't we have prefreezed? mustn't you have prefreezed? mustn't they have prefreezed?	mustn't I have been prefreezing? mustn't you have been prefreezing? mustn't she have been prefreezing? mustn't we have been prefreezing? mustn't you have been prefreezing? mustn't they have been prefreezing?